Hood paint bubbling?
07-08-2006, 12:01 AM
#1
Rennlist Member
Thread Starter
Hood paint bubbling?
OK, around the battery area and up to the strut towerish from there , the hood has paint bubbling on the top side. Not really a big deal since my paint is a 20 footer anyway it just seems strange.
It seemed to have happened after my trip to pennsylvania (on the way there).
The variables were: 3+ hours of driving at around 80-90 indicated in 90 degree 100 percent sun weather.. Which I'm guessing is more like 75-85mph because I have 225/50 tires. I also have the S2 LSD transmission which has a shorter fifth gear.. so basically I was between 3500 and 4k RPM for most of the highway trip.
The paint on the hood is a cheap respray. The temp gauge sat between the first 1/3rd and half the whole trip, more time spent near half, which seems fine.
Is it just the exhaust manifolds getting really hot from such high RPM for that extended amount of time and the heat was moving back towards the battery box and the paint bubbled there because there is no heat insulation back that far?
Or is it a symptom of leaving the car in a greenhouse for a year and not having waxed it in 2 years in conjunction with a crappy paint job eventually giving in to normal engine heat?
This just all seems weird since I drove with the car overheating for almost 6 months before I rebuilt the engine and this never happened.
It's also the first trip of this length I've driven with the car since I have bought it.
It seemed to have happened after my trip to pennsylvania (on the way there).
The variables were: 3+ hours of driving at around 80-90 indicated in 90 degree 100 percent sun weather.. Which I'm guessing is more like 75-85mph because I have 225/50 tires. I also have the S2 LSD transmission which has a shorter fifth gear.. so basically I was between 3500 and 4k RPM for most of the highway trip.
The paint on the hood is a cheap respray. The temp gauge sat between the first 1/3rd and half the whole trip, more time spent near half, which seems fine.
Is it just the exhaust manifolds getting really hot from such high RPM for that extended amount of time and the heat was moving back towards the battery box and the paint bubbled there because there is no heat insulation back that far?
Or is it a symptom of leaving the car in a greenhouse for a year and not having waxed it in 2 years in conjunction with a crappy paint job eventually giving in to normal engine heat?
This just all seems weird since I drove with the car overheating for almost 6 months before I rebuilt the engine and this never happened.
It's also the first trip of this length I've driven with the car since I have bought it.
07-08-2006, 12:25 AM
#2
Rennlist Member
sounds like the paint wasnt stuck to begin with in spots. Not alot of heat coming up from the strut tower. Could also be that you go some brake fluid or battery acid on the paint as well.
07-08-2006, 10:50 AM
#3
Rennlist Member
Thread Starter
Well I doubt the strut tower is where th eheat was coming from, I was just thinking the exhaust manifold is around that area and it was probably the heat from that coming up and back. I was just thinking of the pictures of F1 engines when held at high RPM for a long time getting glowing red. 
Regardless it's not all that important, just more reason to get a real paint job eventually.
Regardless it's not all that important, just more reason to get a real paint job eventually.
