jethot lt's to be specific


i finished my install, however there are two spark plug wires, and one boot that is way too close to the headers (pretty much touching it)............i wrapped them with DEI heat sheath http://www.designengineering.com/alu...re_sheath.html, but thats only good up to 500* direct contact heat.........so im guessing it will burn through the heat sheath eventually and burn my wires

i started the car up, and within about 30 seconds there was a bit of white smoke coming up from around both headers in the engine bay.........im pretty sure its starting to melt the clothlike material that is woven through the heat sheaths.


i should have ordered OVC wires in the first place instead of the regular fit........now i have a feeling i have to take these damn wires out and do some OVC's.......


*sigh*......more money down the drain.

 

I ran into the same problems when I installed my FLPs, burnt wires. Taylor heat sleeve solved the problem but they cost me $10 per sleeve.
www.97ta.com/misc_pic/misc32.jpg

Edit-Nevermind, I routed mines OTVC. I see you didn't.

 

ive got hooker LT and wires routed stock location, had that for 5 months no problems so far

 

Quote:

ive got hooker LT and wires routed stock location, had that for 5 months no problems so far

Same for me, I just tucked them behind the original heat shields on the heads, and put the metal boots that came with the car on the plugs that were remotely close to the header and I have had no problems what so ever.

 

that is all the oils and grease that was on your hands during the install burning off. mine did the same. lasted about 10-20 minutes. the heat sheildd will work for a long time, but OVC wires will be needed eventually. i believe that i saw an article in a chevy mag that said jet-hotted headers usually run about 300-600*. i knwo i can grab mine within 3 minutes of turnignt he car off

 

I put a laser temp gauge on my headers (FLP'S) & they hit around 300ish... Hot enough to melt plug wires with direct contact. Now I just did the Taylor Side mount OVC wires & used Accel shortie plugs & have plenty of clearence on all my boots. No need for the heat sleeves anymore..

 

well the heat sheaths i used are good up to 500*.........and the area where the plugs wires were touching i used double heat sheaths.................so maybe theyll be ok for awhile.

guess ill have to drive it awhile and find out........hmmmm........

 

i have a EGT guage ....cruzing around i get readings around 1400, at idle around 800, and at wot around 1350. My headers are uncoated, so i bet they get pretty close to the EGT readings
Marcin

 

The temps you can read at idle with an IR gun are nowhere near what you see under load. Coated headers will run a few 100deg cooler than uncoated, but when you consider that you can generate 1,400degF inside the primaries, the outside of the tubes will be well above 500degF.

I found the best way to protect the plug wires was the Taylor woven fiberglass "Fire Sleeves". Tie them away from the headers, so they don't actually touch.

 

Hey Devin, feel free to call me about any little snags such as this or for any sort of advice. I agree that the smoke coming off the headers is a normal thing that can last up to 3-5 hours of run time. It's caused by the JetHot stuff finish curing, the oil from your hands and such. I've got a 35' roll of 2" wide fiberglass header wrap, I'll send you a few feet in the mail and see if I can round up a few of the metal tie-wraps needed to secure these to your headers. Just wrap the areas that there is direct contact for an added measure of protection. I've had my headers wrapped in this stuff for 10K miles and while it has become somewhat more brittle, it stays all the same. wrap it tight...wetting it just barely helps a lot (water), use leather gloves and don't touch your face, and it should stay put. Keep in mind that this will cause a few additional headaches (clearance issues) if you ever have to take out or retighten some header bolts but I've always managed to work around it. Anyway, I'll try to drop a few feet and some ties in the mail to you Tuesdayish,...P.S., your o2 extension should be there by Wednesday, if not, call me

 

header temp is gonna be directly effected by air/fuel ratio