04-11-2015, 02:12 PM
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#1
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Registered User
Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
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A word of caution...
I fitted my Top Speed headers and cat delete pipes a few years ago and while I have great respect for the pricing / products, be aware that the drive shaft rubber boots do not take kindly to the extra heat generated by the exposed pipes - especially in stop/go driving.
Last week I had to replace my inner boots (again) as the L/S had split. On closer examination, both boots were showing signs of hardening from the radiated heat after only 20,000 km (13,000 miles). This was on a 6 speed Boxster, the 5 speed may be different as they tend to last longer on the 5 speeder.
The L/H side (drivers side in the US) pipe is only about 50mm from the boot, so wrapping, ceramic coating or a heat shield (as fitted to the original pipes) may be the answer. I'm debating which way to go on this....
__________________
2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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04-11-2015, 03:03 PM
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#2
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Registered User
Join Date: Sep 2008
Location: Agoura Hills (LA) So.Cal.
Posts: 1,574
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Quote:
Originally Posted by Steve Tinker
A word of caution............
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Great information Steve, thanks for posting. It sounds like wrapping them would be the easiest and most cost efferent. I have never done it before but will start doing my homework on it.
__________________
1995 Porsche C4 Cab
2016 BMW M2, 6 Speed LBB - ED 7/2016
1997 993 Cab - Sold; 1997 993 Turbo - Sold
2001 Boxster S - Original Owner - 30K Miles -SOLD
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04-11-2015, 03:17 PM
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#3
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Interesting on the heat issue. The first thing I noticed was the truck didn't get nearly as hot as it use to so I thought I was in the clear on excessive heat.
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03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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04-11-2015, 04:24 PM
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#4
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Rennzenn
Join Date: Feb 2005
Location: Virginia
Posts: 1,369
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I've been running bypass pipes for 4 years/40k miles with no issues. The car is lowered, so angles/clearances may be a bit different.
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Rennzenn
Jfro@rennzenn.com
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04-11-2015, 07:46 PM
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#5
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Registered User
Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
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Quote:
Originally Posted by Chuck W.
Great information Steve, thanks for posting. It sounds like wrapping them would be the easiest and most cost efferent. I have never done it before but will start doing my homework on it.
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Chuck - I can't say I like wrapping - it works OK but I have very good experience with ceramic coating of exhaust pipes, mostly on motorcycles where you can literally feel the difference by placing your hand on the pipe within a few minutes of stopping the engine. To get the best heat dissipation, the pipes need to be coated on both inner & outer surfaces and it is cost affective - just google your local area for ceramic coatings.....
__________________
2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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04-12-2015, 05:07 AM
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#6
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Registered User
Join Date: Nov 2014
Location: Long Island, NY
Posts: 160
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I have the top speed bypass pipes on my '02 base. My secondary cats had a rattle only when really hot so replacing with these fixed the problem and at a good price too! The car passed a New York State inspection with them as well. As for the CV joint boots, I just replaced all 4 of them. The inside boots were dried out and one outer was cracked. The boots are pretty cheap to replace just a pain dealing with all the cv joint grease.
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04-12-2015, 09:11 AM
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#7
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Quote:
Originally Posted by Steve Tinker
Chuck - I can't say I like wrapping - it works OK but I have very good experience with ceramic coating of exhaust pipes, mostly on motorcycles where you can literally feel the difference by placing your hand on the pipe within a few minutes of stopping the engine. To get the best heat dissipation, the pipes need to be coated on both inner & outer surfaces and it is cost affective - just google your local area for ceramic coatings.....
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Have to agree with Steve here. I started a thread on wrapping the pipes and found out it makes the metal brittle. There should be a local shop that does the ceramic coating and it shouldn't too cost much.
Didn't know this was an issue to the boots, I just wanted to keep the heat down.
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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04-12-2015, 04:21 PM
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#8
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Registered User
Join Date: Nov 2006
Location: Sunset Beach, CA
Posts: 305
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I like the Mod, nice write up. My biannual CA test had to be done at a Starr smog only facility this year? They said it was because of the cars age (1998)
So after the test and being told I passed, the tech told me the visual inspection was good too and that several revently failed the visual due to various mods. Anyone in CA been through the Starr ?
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