C4 (L98) Parts help
#41
Snapshot 1 - what location on car? just a cover on a front?
Snapshot 2 - looks like a 17SI alternator frame
Snapshot 3 - I see the flat on the control arm shaft is early C4
Snapshot 4 - SPID for the '95 VIN
Snapshot 5 - looks to be the AIR style of '85
Snapshot 6 - What location on car? This caliper looks to be from a later C4 but that's a conversion that was often done.
Snapshot 7 - looks to be pulley, shield and fan expected on 17SI
Snapshot 8 - off no significance
Snapshot 9 - Water pump pulley for '85 - '87
There's enough maybe for me to reassure myself that when I mentioned '85 I believe the chassis is '85. The calipers are confusing but then it's a quite modified car.
I showed you where to get the engine ID so I doubt I can help you more. The radiator is no issue HD cooling option for '85 thru '89 would do well and fit with maybe only a purchase of new cushions. The alternator, rather than just doing a wild guess on the 17SI I'd get the ID off of the block to confirm my thoughts on an '85. I'd make sure I needed an alternator 1st.
Snapshot 2 - looks like a 17SI alternator frame
Snapshot 3 - I see the flat on the control arm shaft is early C4
Snapshot 4 - SPID for the '95 VIN
Snapshot 5 - looks to be the AIR style of '85
Snapshot 6 - What location on car? This caliper looks to be from a later C4 but that's a conversion that was often done.
Snapshot 7 - looks to be pulley, shield and fan expected on 17SI
Snapshot 8 - off no significance
Snapshot 9 - Water pump pulley for '85 - '87
There's enough maybe for me to reassure myself that when I mentioned '85 I believe the chassis is '85. The calipers are confusing but then it's a quite modified car.
I showed you where to get the engine ID so I doubt I can help you more. The radiator is no issue HD cooling option for '85 thru '89 would do well and fit with maybe only a purchase of new cushions. The alternator, rather than just doing a wild guess on the 17SI I'd get the ID off of the block to confirm my thoughts on an '85. I'd make sure I needed an alternator 1st.
Last edited by WVZR-1; 12-13-2017 at 09:14 AM.
#42
Drifting
Member Since: Mar 2017
Location: Nashville TN
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Just my 2 cents as someone who owns 2 1985s-that engine bay looks very much like a 1985 engine bay. I can't speak to the rest of the car, but my guess is that someone started with a 1985 chassis and motor and put parts from other years onto it. The body is definitely 1990+. Those calipers appear to be aftermarket to me, I doubt they'll tell you anything. I'm fairly certain your alternator is from a 1985, although it appears to be an aftermarket replacement.
Once you get everything figured out, I'd say that it's probably a very good car. Sure, nothing matches, but it sounds like the motor is in decent condition.
Welcome to the world of C4 Corvettes! It's fun, exciting, and sometimes frustrating. It seems like you've got a pretty decent car on your hands, especially if your goal is to drive it and not to have a 100% original car. Hope she gives you many years of enjoyment.
Once you get everything figured out, I'd say that it's probably a very good car. Sure, nothing matches, but it sounds like the motor is in decent condition.
Welcome to the world of C4 Corvettes! It's fun, exciting, and sometimes frustrating. It seems like you've got a pretty decent car on your hands, especially if your goal is to drive it and not to have a 100% original car. Hope she gives you many years of enjoyment.
#43
Drifting
Member Since: Mar 2017
Location: Nashville TN
Posts: 1,897
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BTW, this should help you decipher the codes in the storage compartment from shot #4. Keep in mind, of course, that those storage bins are pretty easy to swap out and so that sticker MAY not be the original for the car.
http://www.corvette-web-central.com/C4RPOcodes.html
http://www.corvette-web-central.com/C4RPOcodes.html
#44
Racer
His exhaust manifolds have an odd feature on top that is not on mine. Also, they do not have the heat shields on them.
Here is a pic of mine and the best I have of the alternator at this time.
Here is a pic of mine and the best I have of the alternator at this time.
Last edited by Randy M; 12-13-2017 at 10:31 AM.
#46
OP - I believe there's many positives to this buy. Most who do the change to later C4 body panels have to do 'PAINT TO MATCH' - looking at the '95 SPID the car is BLACK so you've maybe got original paint. It's not as difficult a predicament as maybe one could think. It's registered so there's no issues there. How frequently does it require safety inspections?
Some might say that not having the OPTI of the '95 is enough of a +!!
If the car runs and drives with only a charging problem you correct that, DRIVE and ENJOY!!!
What actually is the problem with the radiator?
The only other maybe concern could be the operation of the windows and locks. If this was a well thought out swap of parts maybe they used only the later shells and did wiring to the early harnesses.
Some might say that not having the OPTI of the '95 is enough of a +!!
If the car runs and drives with only a charging problem you correct that, DRIVE and ENJOY!!!
What actually is the problem with the radiator?
The only other maybe concern could be the operation of the windows and locks. If this was a well thought out swap of parts maybe they used only the later shells and did wiring to the early harnesses.
#47
Drifting
Member Since: Mar 2017
Location: Nashville TN
Posts: 1,897
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OP - I believe there's many positives to this buy. Most who do the change to later C4 body panels have to do 'PAINT TO MATCH' - looking at the '95 SPID the car is BLACK so you've maybe got original paint. It's not as difficult a predicament as maybe one could think. It's registered so there's no issues there. How frequently does it require safety inspections?
Some might say that not having the OPTI of the '95 is enough of a +!!
If the car runs and drives with only a charging problem you correct that, DRIVE and ENJOY!!!
What actually is the problem with the radiator?
The only other maybe concern could be the operation of the windows and locks. If this was a well thought out swap of parts maybe they used only the later shells and did wiring to the early harnesses.
Some might say that not having the OPTI of the '95 is enough of a +!!
If the car runs and drives with only a charging problem you correct that, DRIVE and ENJOY!!!
What actually is the problem with the radiator?
The only other maybe concern could be the operation of the windows and locks. If this was a well thought out swap of parts maybe they used only the later shells and did wiring to the early harnesses.
The early C4 engine (especially the 85) has an advantage of being a little easier to work on (in my experience, anyway) and the forged iron pistons instead of cast-that engine is TOUGH. Also, while more fragile, I think the older style dash has a cool look while the later C4 looks a little more generic (no offense to anyone who likes the later ones-just not my taste).
Radiator is a pretty easy job. I'd like to know what's wrong with it, too-it might be something you can fix! If it's not cooling very well, these cars are notorious for getting junk from the road sucked up in between the radiator and condensor.
#49
Heel & Toe
Thread Starter
To Bfenty
The image that you send of your engine is a thing of beauty in my eyes! Thats what i want my engine to look like, clean and shiny like that. but when she starts to run no issues i will go through that route. By the looks of what i am seeing and reading i am looking for an alternator from a 1985 model? Thats great, long as i have identified what part i need i can progress forward!
To WVZR-1
The car was a none starter when i bought it, full of electrical issues. i will list them below;
- Dead Battery (Fixed,New one installed)
- Loose Battery cable fixings (Fixed, Replaced adaptors)
- Leaking Radiator (Unsure, I removed the radiator myself, cleaned it filled with rust and re applied, need to do further tests before confirm if fixed due to loose connection)
- Alternator (Lights go dim, car lost power then died and now wont start, while driving i noticed the new battery level was slowly decreasing so believe to be alternator)
- Air leak in engine creating in correct fuel mixtures
- No air bags (Though not 100% if they had them but seems odd if they didnt)
- No hand brake cable at all
- Can smell fuel in car while driving so makes me ill when driving.
- Rear Break lights out & the rear lights dont work either when turn lights on.
Those are the issues i noticed after driving the car for over 1 hour.
Am sure when shes back up on the road and sorted more will come, but i dont mind fixing because i am car mad but i unfortunately dont know much about fixing engines. so when problem is identified and i have the correct part i am more then capable of installing myself
more then likely more issues to come.
The image that you send of your engine is a thing of beauty in my eyes! Thats what i want my engine to look like, clean and shiny like that. but when she starts to run no issues i will go through that route. By the looks of what i am seeing and reading i am looking for an alternator from a 1985 model? Thats great, long as i have identified what part i need i can progress forward!
To WVZR-1
The car was a none starter when i bought it, full of electrical issues. i will list them below;
- Dead Battery (Fixed,New one installed)
- Loose Battery cable fixings (Fixed, Replaced adaptors)
- Leaking Radiator (Unsure, I removed the radiator myself, cleaned it filled with rust and re applied, need to do further tests before confirm if fixed due to loose connection)
- Alternator (Lights go dim, car lost power then died and now wont start, while driving i noticed the new battery level was slowly decreasing so believe to be alternator)
- Air leak in engine creating in correct fuel mixtures
- No air bags (Though not 100% if they had them but seems odd if they didnt)
- No hand brake cable at all
- Can smell fuel in car while driving so makes me ill when driving.
- Rear Break lights out & the rear lights dont work either when turn lights on.
Those are the issues i noticed after driving the car for over 1 hour.
Am sure when shes back up on the road and sorted more will come, but i dont mind fixing because i am car mad but i unfortunately dont know much about fixing engines. so when problem is identified and i have the correct part i am more then capable of installing myself
more then likely more issues to come.
The following users liked this post:
Bfenty (12-13-2017)
#50
The electrical could certainly be somewhat of a nightmare to resolve. Not impossible but difficult. Do windows and locks work? You have one door panel off ... why?
There should be a shop that can check your alternator off of the car. Likely done as a no-charge if you buy something from them. I'd think that even in the UK 17SI Delcotron parts should be available.
An '85 chassis wouldn't have air-bags - that was one reason I asked about registration and safety inspections. The '95 would have had 2.
How did you accomplish a safet inspection with no e-brake. I thought certainly that required in the UK and likely some additional lamps that I didn't see in your snapshots.
There should be a shop that can check your alternator off of the car. Likely done as a no-charge if you buy something from them. I'd think that even in the UK 17SI Delcotron parts should be available.
An '85 chassis wouldn't have air-bags - that was one reason I asked about registration and safety inspections. The '95 would have had 2.
How did you accomplish a safet inspection with no e-brake. I thought certainly that required in the UK and likely some additional lamps that I didn't see in your snapshots.
#51
Drifting
Member Since: Mar 2017
Location: Nashville TN
Posts: 1,897
Received 164 Likes
on
136 Posts
2017 C4 of Year Finalist
To Bfenty
The image that you send of your engine is a thing of beauty in my eyes! Thats what i want my engine to look like, clean and shiny like that. but when she starts to run no issues i will go through that route. By the looks of what i am seeing and reading i am looking for an alternator from a 1985 model? Thats great, long as i have identified what part i need i can progress forward!
To WVZR-1
The car was a none starter when i bought it, full of electrical issues. i will list them below;
- Dead Battery (Fixed,New one installed)
- Loose Battery cable fixings (Fixed, Replaced adaptors)
- Leaking Radiator (Unsure, I removed the radiator myself, cleaned it filled with rust and re applied, need to do further tests before confirm if fixed due to loose connection)
- Alternator (Lights go dim, car lost power then died and now wont start, while driving i noticed the new battery level was slowly decreasing so believe to be alternator)
- Air leak in engine creating in correct fuel mixtures
- No air bags (Though not 100% if they had them but seems odd if they didnt)
- No hand brake cable at all
- Can smell fuel in car while driving so makes me ill when driving.
- Rear Break lights out & the rear lights dont work either when turn lights on.
Those are the issues i noticed after driving the car for over 1 hour.
Am sure when shes back up on the road and sorted more will come, but i dont mind fixing because i am car mad but i unfortunately dont know much about fixing engines. so when problem is identified and i have the correct part i am more then capable of installing myself
more then likely more issues to come.
The image that you send of your engine is a thing of beauty in my eyes! Thats what i want my engine to look like, clean and shiny like that. but when she starts to run no issues i will go through that route. By the looks of what i am seeing and reading i am looking for an alternator from a 1985 model? Thats great, long as i have identified what part i need i can progress forward!
To WVZR-1
The car was a none starter when i bought it, full of electrical issues. i will list them below;
- Dead Battery (Fixed,New one installed)
- Loose Battery cable fixings (Fixed, Replaced adaptors)
- Leaking Radiator (Unsure, I removed the radiator myself, cleaned it filled with rust and re applied, need to do further tests before confirm if fixed due to loose connection)
- Alternator (Lights go dim, car lost power then died and now wont start, while driving i noticed the new battery level was slowly decreasing so believe to be alternator)
- Air leak in engine creating in correct fuel mixtures
- No air bags (Though not 100% if they had them but seems odd if they didnt)
- No hand brake cable at all
- Can smell fuel in car while driving so makes me ill when driving.
- Rear Break lights out & the rear lights dont work either when turn lights on.
Those are the issues i noticed after driving the car for over 1 hour.
Am sure when shes back up on the road and sorted more will come, but i dont mind fixing because i am car mad but i unfortunately dont know much about fixing engines. so when problem is identified and i have the correct part i am more then capable of installing myself
more then likely more issues to come.
Off the top of my head, though, I'd start by pulling spark plugs and seeing what they tell you. Injectors are also a major pain point on these cars, and pulling spark plugs will tell you a lot about which cylinders are causing your problems. I had 3 injectors sticking when I first got my car, and you could smell the fuel from inside the cabin. The spark plugs were black. New injectors and the problem went completely away. Not sure how you determined it was a vacuum leak, but it would be worth at least having a look at the plugs anyway...
Also, looks like you have a cold start injector on there, which eliminates the '89 L98 as the motor you have. Could still be '85-'88 based on just that fact (though I still strongly suspect an '85).
#52
Safety Car
Somebody did a HUGE amount of work on this car!! To return it to original (whatever that is) would be a monumental project!!!
The following users liked this post:
Randy M (12-14-2017)
#53
Heel & Toe
Thread Starter
The electrical could certainly be somewhat of a nightmare to resolve. Not impossible but difficult. Do windows and locks work? You have one door panel off ... why?
There should be a shop that can check your alternator off of the car. Likely done as a no-charge if you buy something from them. I'd think that even in the UK 17SI Delcotron parts should be available.
An '85 chassis wouldn't have air-bags - that was one reason I asked about registration and safety inspections. The '95 would have had 2.
How did you accomplish a safet inspection with no e-brake. I thought certainly that required in the UK and likely some additional lamps that I didn't see in your snapshots.
There should be a shop that can check your alternator off of the car. Likely done as a no-charge if you buy something from them. I'd think that even in the UK 17SI Delcotron parts should be available.
An '85 chassis wouldn't have air-bags - that was one reason I asked about registration and safety inspections. The '95 would have had 2.
How did you accomplish a safet inspection with no e-brake. I thought certainly that required in the UK and likely some additional lamps that I didn't see in your snapshots.
#54
Safety Car
What p/n's do you have on the upper front control ("A") arms. The '85 and '95 are not the same. Brembo front brakes is another clue that some serious work was done! Do the front wheel hubs have ABS sensors on the inside of the steering knuckles?
Someone may need to provide a photo of these sensors.
WVZR-1 will know the p/n's for the "A" arms.
#55
Melting Slicks
Since the windshield VIN, the door tag, and the SPI label all show the same '95 serial number, I'm going to guess this is a '95 with an '85 front clip. I can't imagine someone going to so much trouble as to make those labels match, and they appear to be un-molested. Look for frame repair in the engine compartment.
What p/n's do you have on the upper front control ("A") arms. The '85 and '95 are not the same. Brembo front brakes is another clue that some serious work was done! Do the front wheel hubs have ABS sensors on the inside of the steering knuckles?
Someone may need to provide a photo of these sensors.
WVZR-1 will know the p/n's for the "A" arms.
What p/n's do you have on the upper front control ("A") arms. The '85 and '95 are not the same. Brembo front brakes is another clue that some serious work was done! Do the front wheel hubs have ABS sensors on the inside of the steering knuckles?
Someone may need to provide a photo of these sensors.
WVZR-1 will know the p/n's for the "A" arms.
If it is Truly a 95 I would buy parts for a 85/86 because those are major parts
Last edited by s carter; 12-13-2017 at 04:32 PM.
#56
There is a partial vin# stamped in the face of the frame behind the left front wheel.The car looks mostly like an 85 with later front and rear bumpers.www.rockauto.com will export parts but I don’t know anything about the extra taxes involved.
#58
Heel & Toe
Thread Starter
Am i right in thinking that i need a replacement "Bosch AL556X Alternator" ?
or maybe this one? Im not 100%
or maybe this one? Im not 100%
Last edited by Jordan Davies; 12-13-2017 at 09:07 PM.
#59
Melting Slicks
Am i right in thinking that i need a replacement "Bosch AL556X Alternator" ?
or maybe this one? Im not 100%
https://www.amazon.co.uk/TUFF-STUFF-...rds=tuff+stuff
or maybe this one? Im not 100%
https://www.amazon.co.uk/TUFF-STUFF-...rds=tuff+stuff
you may be able to jump start your alternator if it has been inactive for a while it is explained in one of the Videos
https://www.youtube.com/results?sear...+gm+alternator
Last edited by s carter; 12-13-2017 at 11:02 PM.
The following users liked this post:
Jordan Davies (12-14-2017)
#60
Instructor
The alternator is a 17si case size...the largest GM made. It was only used on the Corvette, a Cadillac (I think) and heavy duty trucks with snow plow package. The thing is, you can't easily make the smaller case fit and it's hard to find out what case size they are when ordering online.
I wound up just throwing some new brushes and diodes at mine and it was good to go.