04-19-2008 | #1 |
Join Date: Feb 2004
Location: Ma
Posts: 404
|
Exhaust leak
I finally have the headers on, the RT cats and exhaust welded up, and am ready to head back to the dyno. When the car idles, I hear a very faint tick. To me it sounds like a slight exhaust leak but, the flanges and all the joints look clean. The exhaust guy said if it's making a ticking sound, then it has to be a header flange. My questions are 1. Is the exhaust guy correct? Or could it be a flange at the cats? 2. What's the best way to find a small leak? (I've read of some guys using Sea foam) and 3. Will this screw with my A/FR's or any other dyno data? I've tried tightening the header bolts that I can get to from the top and they are tight. Any help would be appreciated.
TIA, Mike
__________________
1990 ZR1 #2574 Medium Quasar Blue Metallic 1 of 19 |
04-20-2008 | #2 |
Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
|
Re: Exhaust leak
I would say that the leak could be at the collector (s) OR the flange on one of the heads. Drive it for a while & then look for a black trail of condensation & carbon at the suspected attatching points. When its cold is probably when it will be most pronounced.
__________________
[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] |
04-23-2008 | #3 |
Join Date: Feb 2004
Location: Ma
Posts: 404
|
Re: Exhaust leak
Thanks, you're right. I only hear it when it's cold and even then you really have to listen for it. Unfortunately, all the joints are still spotless.
__________________
1990 ZR1 #2574 Medium Quasar Blue Metallic 1 of 19 |
|
|