Installing Gages

[JRMora]

I finally got my DiPricols from Genos (they showed up two hours AFTER I took off for the airport for an extended business trip on the east coast:{ ). I'm installing this weekend, though.



A quick question - I am installing a pyrometer and a boost gage. On the pyro, when you all screwed your thermocouple into your manifold, did you use any anti-sieze or thread locker? What torque did you tighten the fittings to. Hate to have anything fall out! On the boost gage I am going to use a boost bolt (I have a good quality torque wrench - 12 ft-lbs!), but do I need to tape (teflon) those threads or the threads at the gage?



Any help would be appreciated!



Juan

 

[SRadke]

Teflon tape is good on the boost fittings. If you intend to ever tak the thermocouple out of your exhaust manifold put never seize on it. I put it on mine and it was stil alot of work to get it out without ruining it. Good luck.



-Scott

 

[bpenrod]

I definately recommend the anti-sieze on the thermocouple. I had mine post turbo for awhile and when it came time (when i got the guts!) to move it pre-turbo it came out really smooth. I didn't use teflon tape on the boost but did use a thread sealer instead, not sure which is better.

 

[swexlin]

We just did our DiProcals this past weekend. Scott (Proram) who has probably forgotten more than some of us will know, recommended NOT using anti-seize on either, IF you ever wanted them to come out again, so we didn't use any.



He didn't use a torque wrench for either the thermocouple or the boost bolt. Hand tightened juuuust snug. No issues or leaks, and I have checked them after a couple days.



GO for it.

 

[FDavid]

becareful on the boost bolt, I had my torque wrench set at 12 lbs and it snapped the sob. hand tighten it as best you can then maybe a 1/8 of a turn with a wrench if you are one of those anal guys

 

[swexlin]

hand tighten it as best you can then maybe a 1/8 of a turn with a wrench if you are one of those anal guys

That's what we did. Hand tight, then just very gently with the wrench.

 

[JRMora]

Years and years ago when I worked on air-cooled VW's we used to use the rule of thumb for torquing the head bolts:



Tighten until they strip then back em off a 1/4 turn.



The aluminum engine cases were notorius for stripping 5 lb-ft below the "recommended" torque. Got really good at installing heli-coils, though!



Thanks for all the help.



Juan

 

[nickleinonen]

i put high temp copper anti seize on the 1/8" npt fitting that went into the exhaust manifold, but i didn't put any on compression nut holding the thermocouple in place. for the intake i put teflon tape on the npt threads and dry on the compression fittings