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06-14-2018, 02:06 AM
Replies: 10
Views: 352
Posted By gerardvg

Hi Yeah you have to remove the front exhaust...

Hi

Yeah you have to remove the front exhaust to get to the 10mm bolt that holds the TV valve to transmission, its not a hard job but if you don't have a decent trolley jack stands and tools best...
04-17-2018, 01:46 AM
Replies: 10
Views: 388
Posted By gerardvg

:withstupid: Oh no no no ... with factory...

:withstupid:

Oh no no no ... with factory mufflers it gets real loud when you open that blank port, I had my dumb half hour of the day when i did that. She was way too darn loud, had to buy new...
04-15-2018, 09:33 PM
Replies: 24
Views: 502
Posted By gerardvg

Hi Replace the compressor if its leaking, you...

Hi
Replace the compressor if its leaking, you will need to replace the a/c line O rings. replace the hoses with barrier hoses, you can get them made as per samples you give.
Ester oil is for R12 to...
04-10-2018, 06:02 PM
Replies: 13
Views: 304
Posted By gerardvg

:iagree: Faster and more reliable, you wont...

:iagree:

Faster and more reliable, you wont regret it. :thumbs:
04-05-2018, 05:53 AM
Replies: 2
Views: 217
Posted By gerardvg

Hi You can use Tunerpro and a moates...

Hi

You can use Tunerpro and a moates ostrich emulator, plug it into the ECM chip slot and add the supplied chip to the cable. Then you can do changes with a laptop quick and easy.
Note it is a...
03-18-2018, 11:41 PM
Replies: 8
Views: 533
Posted By gerardvg

Check the brake pedal switches, there is a vacuum...

Check the brake pedal switches, there is a vacuum hose switch and also an electrical one that is used with cruise control and the torque converter clutch circuit.

When my cruise control played up...
03-08-2018, 10:04 PM
Replies: 30
Views: 1,126
Posted By gerardvg

Long tube headers are the biggest bang for buck...

Long tube headers are the biggest bang for buck for a TPI,
back all those years ago when my c4 was standard I ran it at a quarter mile 14.5 sec quarter stock standard.

A week later after headers...
02-13-2018, 06:32 PM
Replies: 2
Views: 197
Posted By gerardvg

Hi The factory glued the weatherstrips, when...

Hi
The factory glued the weatherstrips, when removing them they can be damaged. When you replace your weatherstrip do not use glue, I have installed my weatherstrips without glue and no leaks.
You...
01-29-2018, 03:04 AM
Replies: 67
Views: 1,744
Posted By gerardvg

First what oil are you using? 20W 50 mineral or...

First what oil are you using? 20W 50 mineral or 5W 30 synthetic oil?
Using synthetic or quite thin oil will increase consumption.
Do the valve guide seals and that will reduce the oil consumption.
01-22-2018, 05:48 AM
Replies: 12
Views: 514
Posted By gerardvg

Hi Check the wiper motor, the cover has the...

Hi

Check the wiper motor, the cover has the wiper position arm that is used in the park circuit.
Also check the two connector pins in the right side of wiper motor they connect to the park...
01-05-2018, 03:10 AM
Replies: 12
Views: 390
Posted By gerardvg

I upgraded the side window regulator assemblies...

I upgraded the side window regulator assemblies to the later style on my 85, wiring plugs straight onto the newer side window regulator motor.
Best upgrade for early C4's
12-26-2017, 03:59 PM
Replies: 2
Views: 252
Posted By gerardvg

Hi The early clusters had heat issues from the...

Hi
The early clusters had heat issues from the halogen backlight bulbs, your 89 should already have Xenon backlight bulbs I believe.
I replaced my 85 bulbs with led ones many years ago, original...
12-20-2017, 12:05 AM
Replies: 6
Views: 244
Posted By gerardvg

:iagree: Camber and toe in will change as...

:iagree:

Camber and toe in will change as you change ride heights, excessive tire wear will result...:leaving:
12-10-2017, 04:22 PM
Replies: 5
Views: 458
Posted By gerardvg

I have never really noticed any excessive...

I have never really noticed any excessive looseness, best way to check is jack one corner of the car up with targa top removed. if you cannot open and close the doors easily there is a problem,
have...
11-22-2017, 11:43 PM
Replies: 32
Views: 1,282
Posted By gerardvg

Hi First check your rear wheel camber, the...

Hi

First check your rear wheel camber, the offset bolt / washer camber adjustment can move. If one wheel has negative and the other positive camber it can look wrong.

Use a piece of string...
10-22-2017, 05:26 PM
Replies: 13
Views: 684
Posted By gerardvg

:iagree: Banski suspension components are...

:iagree:

Banski suspension components are great, ease of "precise" adjustment, especially for replacing the offset camber washer/ bolt.
I track my car as often as I can, being able to adjust my...
10-11-2017, 05:39 AM
Replies: 20
Views: 1,009
Posted By gerardvg

You can buy a air dam intake mesh kit on ebay or...

You can buy a air dam intake mesh kit on ebay or corvette central, however mesh grilles are readily available at parts shops.
I cut mine to size and shoved it down in front of the air cleaner and...
10-11-2017, 05:21 AM
Replies: 20
Views: 808
Posted By gerardvg

:iagree: Check the valve springs and rocker...

:iagree:

Check the valve springs and rocker arm geometry, and of course make sure the rocker does not bind with the valve retainers.

Usually after a run the valve lash should be checked, what...
10-10-2017, 04:10 AM
Replies: 12
Views: 530
Posted By gerardvg

Hi The early C4's were designed to run...

Hi

The early C4's were designed to run 200-230F for efficient combustion, the standard thermostat is a 195F so will mostly be fully open allowing plenty of coolant flow

The coolant fan will be...
10-03-2017, 06:22 PM
Replies: 11
Views: 579
Posted By gerardvg

Hi I had replaced the bushes with prothane...

Hi
I had replaced the bushes with prothane ones, I was quite disappointed with the ride afterwards. The suspension feels 30% stiffer, even though I used plenty of the special lube the ride is...
10-01-2017, 02:25 AM
Replies: 20
Views: 1,009
Posted By gerardvg

Hi Once you have cleaned between the...

Hi

Once you have cleaned between the radiator and a/c condenser stop the free highway trash collection service, i put a mesh screen down past the front of the air filter down to lower air dam.
I...
09-28-2017, 08:17 AM
Replies: 7
Views: 398
Posted By gerardvg

Hi First thing to do when you get a...

Hi

First thing to do when you get a corvette get the shop manual. :thumbs:
The 85 C4 is quite simple really, the ecm will tell you what is wrong with fault codes. some things are a little more...
09-23-2017, 02:03 AM
Replies: 68
Views: 2,928
Posted By gerardvg

Hi Check your universal joints, half shafts...

Hi

Check your universal joints, half shafts especially close to wheels.
They tend to start squeaking at first, also the fuel pump they are cheap perhaps put a spare in the compartment.

I have...
09-07-2017, 02:08 AM
Replies: 30
Views: 1,072
Posted By gerardvg

Hi Photobucket have put a stop on using...

Hi

Photobucket have put a stop on using images unless you pay to do that ....

Anway my c4 does not go slow over speed bumps, i actually hoof it over them to settle my suspension.
​​​​​​they...
08-06-2017, 06:10 AM
Replies: 1
Views: 231
Posted By gerardvg

Hi Yes there are 2x bearings one is hidden,...

Hi

Yes there are 2x bearings one is hidden, you need to remove the column and shrouds and the tilt pins.
Then replace the lower bearing and refit the tilt column then fit the upper bearing race,...
Showing results 1 to 25 of 92
 


 
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