Notices
C4 General Discussion General C4 Corvette Discussion not covered in Tech

What did you do to your C4 today?

Thread Tools
 
Search this Thread
 
Old 07-17-2017, 06:10 PM
  #3001  
1993C4LT1
Race Director
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 15,457
Received 614 Likes on 493 Posts

Default

Saturday, took it out for a spin in morning, before all the traffic. Then, when I got back, started to check something on my Jag. The PO of the Jag said the updated tensioners and primary timing chain were installed. The gentleman that sold it to me is by no means poor, so I believed him. Plus, I saw it on the service records, but didn't indicate what tensioners were used. Then I saw the metal timing chain tensioners Sorry it's not really C4 related, but just thought I'd share
Old 07-17-2017, 06:27 PM
  #3002  
confab
Melting Slicks
 
confab's Avatar
 
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes on 295 Posts
Default

Weekend.
Attached Images    
Old 07-17-2017, 06:34 PM
  #3003  
mark970
Drifting

 
mark970's Avatar
 
Member Since: Apr 2017
Location: Minnesota
Posts: 1,310
Received 273 Likes on 209 Posts
Default

Originally Posted by confab
Weekend.


looks good!
Old 07-17-2017, 06:37 PM
  #3004  
confab
Melting Slicks
 
confab's Avatar
 
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes on 295 Posts
Default

Originally Posted by mark970


looks good!
Thanks.. I appreciate that.

That crack was a total surprise. It had failing filler over it. I thought it was just peeling paint.

Somebody used polyester on it to fix it, and it just let go under there. Made the paint bubble and split.

Epoxy now.
Old 07-17-2017, 06:42 PM
  #3005  
mark970
Drifting

 
mark970's Avatar
 
Member Since: Apr 2017
Location: Minnesota
Posts: 1,310
Received 273 Likes on 209 Posts
Default

Originally Posted by confab
Thanks.. I appreciate that.

That crack was a total surprise. It had failing filler over it. I thought it was just peeling paint.

Somebody used polyester on it to fix it, and it just let go under there. Made the paint bubble and split.

Epoxy now.
I had a surprise filler on the door of my 96 I painted. I had to prep that area multiple times. I even asked the paint shop if I needed to use a plastic adhesion promoter since the car is fiberglass (they said I didn't need to). So I feel yeah.
anyways I'm expecting to see paint this year? so can't wait to see it!

I like seeing this stuff come together. I miss body work.
Old 07-17-2017, 07:02 PM
  #3006  
Gibbles
Drifting
 
Gibbles's Avatar
 
Member Since: Mar 2015
Location: Utah
Posts: 1,274
Received 162 Likes on 151 Posts
Default

Originally Posted by mark970
thats all i've ever used, since the late 90's. i have a Sharp 1.6 for Sealer and a Sata 1.4 for paint (and a cheap primer gun).

This is the last paint job i did...before and after Polo Green to Comp Yellow
Looks good, i have been thinking about a nice bright yellow as an option when i paint my car.

I also picked up a 3M Accuspray after doing a bunch or reading...
pretty much i don't want to be forced to worry about cleaning for my first few times painting... I like the idea of just dumping the tips and the pps cleanup looks nice...

My new air compressor is really close to being ready to lay down some paint...

​​​​​​​I also want to try the base/clear, so far i have only painted with a single apply epoxy paint...
​​​​​
Old 07-18-2017, 06:10 AM
  #3007  
confab
Melting Slicks
 
confab's Avatar
 
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes on 295 Posts
Default

Originally Posted by mark970
I had a surprise filler on the door of my 96 I painted. I had to prep that area multiple times. I even asked the paint shop if I needed to use a plastic adhesion promoter since the car is fiberglass (they said I didn't need to). So I feel yeah.
anyways I'm expecting to see paint this year? so can't wait to see it!
Hoping for paint this year!! I've been good! Put it off for work for years. Let it sit under a tarp. All of that. I'm getting selfish now. Sick of looking at it like that. Sick of driving the ugliest C4 around.. So, I'm gonna try.

And I hear you about the "surprise filler" (Grrrr, right?)

There is a very large crack there someone apparently tried to fix with what appears to be "kitty hair"

The problem with this is that our cars are made of a special fiberglass called "Sheet Molded Compound" or SMC. (As it is referred to in the spec sheets) My (quite humble) understanding is that this has more to do with the manufacturing process itself than the glass (although it does appear to be more dense than some of the older cars) in that there is some mold release compound left in the panels and non-SMC approved fillers and repair products can separate from it over time as a result. Particularly polyester based products.

And this is exactly what happened with this crack. I grind off the filler to find a free range crack that the filler was trying to hold closed, because the glass repair underneath completely let go.

What I have read suggests we should use epoxy based resins (and there are cloths and matts which work better with it than others.) to do these repairs and make them last. I only use fillers which specifically list SMC as an acceptable substrate for the same reason.

Adhesion Promoters are generally found/used on the plastic bumpers. They use various flex agents here too, although I am still educating myself on those.

Thanks for the encouraging words! Best to you and yours!
I like seeing this stuff come together. I miss body work.
You can come do mine!!

Last edited by confab; 07-18-2017 at 06:13 AM.
The following users liked this post:
knikula (07-28-2017)
Old 07-18-2017, 10:19 AM
  #3008  
mark970
Drifting

 
mark970's Avatar
 
Member Since: Apr 2017
Location: Minnesota
Posts: 1,310
Received 273 Likes on 209 Posts
Default

Originally Posted by Gibbles
Looks good, i have been thinking about a nice bright yellow as an option when i paint my car.

I also picked up a 3M Accuspray after doing a bunch or reading...
pretty much i don't want to be forced to worry about cleaning for my first few times painting... I like the idea of just dumping the tips and the pps cleanup looks nice...

My new air compressor is really close to being ready to lay down some paint...

​​​​​​​I also want to try the base/clear, so far i have only painted with a single apply epoxy paint...
​​​​​
the particular yellow i used i wasnt very happy with. it was a high quality PPG paint and it was a factory yellow for 1996 (i think competition yellow??). the issue i had with it (and many chevy paints in the era) was it turned to a very ugly "dull" almost pastel color in low light (shade, dusk ect...) but in the sun its simply amazing (and its not even a metallic flake paint, it's a solid color).

i would not recommend that paint.
Old 07-20-2017, 01:48 AM
  #3009  
confab
Melting Slicks
 
confab's Avatar
 
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes on 295 Posts
Default

Well.. It started with sanding my fender.
Attached Images   
Old 07-20-2017, 11:17 AM
  #3010  
mark970
Drifting

 
mark970's Avatar
 
Member Since: Apr 2017
Location: Minnesota
Posts: 1,310
Received 273 Likes on 209 Posts
Default

Originally Posted by confab
Well.. It started with sanding my fender.
"and i wish i didnt start"

oh my...
Old 07-20-2017, 11:28 AM
  #3011  
confab
Melting Slicks
 
confab's Avatar
 
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes on 295 Posts
Default

Originally Posted by mark970
"and i wish i didnt start"

oh my...
Oh my gosh it's bad.. There was a 1/4" gap there where the bumper cover didn't meet the fenders. I thought it was a cheap after market, or that it shrank. It didn't. The car grew when they repaired that!! They layered up what looks like "kitty hair" and filler till it was huge!

I literally ground 1/2" off the width of my car yesterday.

The bright side? Now the cover will fit perfect. lol.

I think it'll be fine.. It's got the first round of epoxy and cloth on it now.

Get some back side reinforcement on it and some panel adhesive to re-attach it to the structure underneath and it'll be good as new.

But holy crap.. 1/2 an inch!!!
Old 07-20-2017, 12:03 PM
  #3012  
mark970
Drifting

 
mark970's Avatar
 
Member Since: Apr 2017
Location: Minnesota
Posts: 1,310
Received 273 Likes on 209 Posts
Default

Originally Posted by confab
Oh my gosh it's bad.. There was a 1/4" gap there where the bumper cover didn't meet the fenders. I thought it was a cheap after market, or that it shrank. It didn't. The car grew when they repaired that!! They layered up what looks like "kitty hair" and filler till it was huge!

I literally ground 1/2" off the width of my car yesterday.

The bright side? Now the cover will fit perfect. lol.

I think it'll be fine.. It's got the first round of epoxy and cloth on it now.

Get some back side reinforcement on it and some panel adhesive to re-attach it to the structure underneath and it'll be good as new.

But holy crap.. 1/2 an inch!!!
well shoot..you were half way to a wide-body ZR1 look..that would have been EPIC

anyways...VERY impressive on the fiberglass work...that's something i havent done (other than my attempt to customize my 96 hood to a '67 427 hood scoop...that didnt work at all)
The following users liked this post:
confab (08-01-2017)
Old 07-20-2017, 12:11 PM
  #3013  
kael
Drifting
Support Corvetteforum!
 
kael's Avatar
 
Member Since: Nov 2015
Posts: 1,529
Received 230 Likes on 189 Posts
Finalist 2020 C4 of the Year - Unmodified
Default

Originally Posted by confab
Well.. It started with sanding my fender.
My eyes, they BURN!
Old 07-20-2017, 12:24 PM
  #3014  
81c3
Le Mans Master
 
81c3's Avatar
 
Member Since: Dec 2005
Location: Where Woke Goes to Die
Posts: 8,194
Received 615 Likes on 431 Posts

Default

Originally Posted by confab
Well.. It started with sanding my fender.
Holy Crap!!!
Old 07-20-2017, 10:37 PM
  #3015  
kael
Drifting
Support Corvetteforum!
 
kael's Avatar
 
Member Since: Nov 2015
Posts: 1,529
Received 230 Likes on 189 Posts
Finalist 2020 C4 of the Year - Unmodified
Default

Decided to finally adjust the TPS. Didn't even know what that was 3 months ago, found a forum post or two and been meaning to adjust for a month or so.

Holy flipping wheels of beauty, is THAT how the accelerator is supposed to FEEL?

This whole time I thought hey, hey there, it's a big old engine Kael, it's going to ignore slow takeoff and need a bit of a push to obey. I had no idea the TPS set correctly would change so much. Oil pressure at idle dropped to 50ish, take off nice and easy on the foot, just push the pedal and go. Driving around in the city with A/C on and 95 F outside, 200F coolant.

Throttle Position Sensor (TPS), chase it if you got it!!
Old 07-20-2017, 11:13 PM
  #3016  
1993C4LT1
Race Director
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 15,457
Received 614 Likes on 493 Posts

Default

Wow confab, sorry that was done to your car. But I know it will turn out nice
Old 07-21-2017, 05:20 AM
  #3017  
OzyC4
Instructor
 
OzyC4's Avatar
 
Member Since: Jul 2016
Location: Melbourne Australia
Posts: 166
Received 9 Likes on 9 Posts
Default

I bought my car last October and received it from the shippers in January this year. Since then I've used it sparingly around the metro area for 8 days. I know this because I have it on a permit scheme which requires me to fill in a log book every time I drive it.
Anyhoo a couple of days ago I took it on an interstate trip where I covered approx. 650 miles, and I have to say I really enjoyed the experience. The car purred along doing 1700 revs to sit on 70 mph and returned 26 mpg. All up the car performed very well, the heater was great, the wipers good and the cruise control perfect. I'll have to do it again soon.
The car clicked over 40K miles on the trip.

Last edited by OzyC4; 07-21-2017 at 05:22 AM.

Get notified of new replies

To What did you do to your C4 today?

Old 07-21-2017, 06:14 PM
  #3018  
xrav22
Drifting
 
xrav22's Avatar
 
Member Since: Mar 2013
Location: Venice Cali.
Posts: 1,952
Received 235 Likes on 218 Posts

Default

Like others here I finished my r134a retro fitting and thought I would try to protect my investment. Had to brighten it up in photoshop. My phone is bwd at pics in low light.




Last edited by xrav22; 08-02-2017 at 11:02 AM.
Old 07-21-2017, 09:41 PM
  #3019  
confab
Melting Slicks
 
confab's Avatar
 
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes on 295 Posts
Default

Thanks for your kind words, guys..

It's better..

It isn't pictured here (And everyone has their own method) but I like to pack cracks with matt, and then strip cloth over it, then matt, and knock it back down.

Then, on something this large, do a full cloth wrap and overlay that with matt.. (To try and avoid tracking, and to leave something to grind into and shape.)

It turned out pretty good so far.
Attached Images    

Last edited by confab; 07-22-2017 at 03:25 AM.
The following users liked this post:
PSU69 (07-22-2017)
Old 07-21-2017, 10:03 PM
  #3020  
mark970
Drifting

 
mark970's Avatar
 
Member Since: Apr 2017
Location: Minnesota
Posts: 1,310
Received 273 Likes on 209 Posts
Default

It's turned out pretty good so far.
yup! thats AWESOME

keep the updates coming

you sure got me beat...all i did was make a video for my youtube...not even a DIY this time.

Last edited by mark970; 07-21-2017 at 10:04 PM.
The following users liked this post:
confab (08-01-2017)


Quick Reply: What did you do to your C4 today?



All times are GMT -4. The time now is 06:53 AM.