Just a "Quickie" on TPIS headers
From a couple days ago, I downloaded the thread asking "why TPIS Headers?" and took it along as well.
I know headers are always a Bitxxch to install on late model cars (my '87 Pont GTA was a SOB!) and I never wanted to go through that again.
Anyway, the shop was very complimentary about the installation and fit. Still very tight, close clearances, but they fit. One tube needed slight grinding for the flange bolt to fit straight. Also the flange was slightly off center so the flange holes needed drilling, but no biggee.Their comment was most header fits (other brands on non-C4's) are far more difficult because of poor engineering and it is easy to pick at problems. On the TPIS system, there was good clearance for everything, including the starter and steering box. I was particularly concerned with the starter, however thay said no heat shield necessary, but I will do it anyway (prior experience on another car)
I'll update CF with stuff as it is worth mentioning. I am a happy boy
Last edited by GeosFun; Jan 13, 2006 at 01:17 PM.
Last edited by GeosFun; Jan 13, 2006 at 01:54 PM.





The U-bolts that were originally used on mine are the biggest pieces of garbage ever and they hung down far enough to scrape the bulge at the top of my driveway. They didn't even keep the pipes tightly attached. They did, however, bend the ever living crap out of the pipe to where it doesn't make for a flush fit anymore.
Please keep in mind, I am not complaining about anything in the TPIS system, just passing along info. naturally it is the little picky things that get discussed making them sound more important that they were. Frankly, I was surprised the muffler guys were as complimentary as they were. Compliments from mechanics are refreshing. It was still a pretty big job before it was completed.
Last edited by GeosFun; Jan 13, 2006 at 04:17 PM.
The Best of Corvette for Corvette Enthusiasts
I've had them for 3 years on my Xfire. They're great headers.
I agree with the shops sentiments.
One thing I did learn, and this is for those considering purchase or R&R on an existing set, is to leave the headers very loose, put on the y-pipe, then go back and tighten header bolts. Also, do not be afraid to WD40 the collectors/y-pipe connection to further ease installation.
I played hell fitting the y-pipe when I tightend the header bolts first, "lube, twist, push, pull, hammer,... repeat 100 times"

Wouldn't want to do that on headers though, maybe you can cover the gap in the bandclamp with some galvanized steel sheeting, put it under the clamp before tightening. I tried the same with a budweiser can... but heat+ moisture + dissimilar metals, that can didn't last long.
I have an automatic. I saved the stock exhaust manifolds and pre-cats/Y-pipe. The muffler shop welded a flange on the main cat and new and old Y-pipes for easier on-off R&R's. Cal's bi annual emissions testing includes a visual inspection and the TPIS has no EO# because of missing pre-cats. So I get to do this every other year.
So sad because I have no doubt the car runs clean as is. I didn't say that. I'll deny everything and demand proof!
Must've been my evil twin.











