Quote:
Originally Posted by hardparker
I've had some minor boost leak issues in the past that I've vanquished by replacing all of the pressurized OEM charge pipe seals with o-rings.
Harkes first put forward replacing the charge pipe to throttle body o-ring with a larger o-ring. I figured I'd flesh in the rest for those who want to replace the rest of the OEM seals with better sealing, inexpensive, non-directional o-rings. The grand total of this setup is $3.00, plus shipping. I've boost leak tested it up to 30 psi without any leaks.
Be warned that installing fresh o-rings requires significantly more effort. After they've been installed for a while, they form to the seal path better and are easier to reinstall. That first time is a real pain, but it can be done. Be sure to lightly grease both the o-ring and the sealing surface that it'll be sliding onto.
These are the largest cross section o-rings I've been able to fit. Hope this makes all of your boost leaks go bye bye, too. 
Turbo outlet: 1 - 4.5mm X 49mm - $.98
https://www.theoringstore.com/store/...ducts_id=17446
Throttle body: 1 - 4mm x 81mm - $.90
https://www.theoringstore.com/store/...ducts_id=39576
Intercooler: 2 - 4mm x 59mm - 1.12$
https://www.theoringstore.com/store/...oducts_id=2242 |
Huge thanks for posting this. I just wish i had waited a little longer lol - i got super impatient last night and ordered about 20 different Orings. Thankfully, the sizes you mentioned are captured in my order. I also got the exact same ID rings, but in 4.5mm and 5mm CS, just to see if i could squeeze in a larger one. I also got a range of larger IDs because i wasn't sure if people were posted in OD or ID, so i wanted to make sure i got both. I didn't order the turbo outlet size, but I do not plan to remove the TIC pipe anytime soon, and hopefully i don't have a leak there. I also got the same material/DURA, so i think i will be good.
The cheapest shipping was 2day air at $6.99, so really hoping i get them this weekend and can install.