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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,527
I would imagine TK buys the same adapters I use. The application for these is for those wishing to replace the 3LDZ with a K27 and retain the OEM up-pipe. Most K27's do not have the o-ring machined boss that is found on the 3LDZ.
These adapters MUST be installed properly or the o-ring may be damaged and they will leak boost. I lubricate and press them on for clients so I know they are properly installed.
Jim is correct that the adapter requires the intercooler to be secure or pressure will push the intercooler up and the seals may leak. Clamped hoses do not depend solely on the intercoooler being properly bolted down to retain a proper seal. Oil seepage from the turbo can cause both types to leak with time.
The alternative to using these adapters is to cut the bottom off the OEM up-pipe and connect to the turbo with a length of hose. I've done both and have no preference as far as how well it works, they both work if done right, they both leak if done wrong. The hose method is more forgiving but not an option if you wish to use a K27 and keep the OEM up-pipe intact.

Here is a picture of the adapter and a K27:

Here is a picture of the adapter installed:

Here is a picture of what happens if you don't install the adapter properly. I think this guy used a slege hammer to put it on:

RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 12-10-2011, 11:20 AM
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