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Stronger But Maybe Not As Oil-Tight
Posted: Wed Nov 18, 2009 11:21 pm
by Wheelman-111
Greetings:
Spring steel threaded into aluminum is likely to be stronger than a bolt riding directly in aluminum threads - agreed. However because it creates a second plane of separation, the Heli-Coiled plug may seep unless bonded to the aluminum. Red LocTite or JB Weld would achieve that in a low-pressure application like a tranny case.
Re: Flash 3.1 Nikasil Bore Update
Posted: Thu Nov 19, 2009 1:10 am
by veedubh20
time-sert is better than helicoil.
http://www.timesert.com/html/mtrcsert.html
I did on a customer bmw e39 to do headgasket job, on a aluminum block, then customer never came back
Re: Flash 3.1 Nikasil Bore Update
Posted: Thu Nov 19, 2009 3:57 am
by ldrancer
yea i know about time sert. i asked a guy if he done time sert's i had a bolt stripped out, and he said heli coil. i think time sert's would be better, but i don't think i could find anyone around here who would have one. i haven't asked, i asked the one guy, but, i haven't checked i don't know. i'll check, but to get them, there expensive. i'll probably get a heli coil and loctite, i was thinking that. time sert would be good, but i don't know if i can find one. i'll check, i'll probably get the heli coil i can get that, and get it loctite stuff on. the parts 50 bucks the cheapest i seen it is 35 and then everything else. i can get the part. just, ill find out.
Re: Flash 3.1 Nikasil Bore Update
Posted: Tue Jan 05, 2010 7:19 pm
by Kenny_McCormic
Heli coils are approved for use on things like commercial jets and M16s, IIRC they don't reccomend any sort of threadlocker or glue. .
Re: Flash 3.1 Nikasil Bore Update
Posted: Tue Jan 05, 2010 8:48 pm
by ldrancer
how about just a little bit on the threads. wouldn't it just lock in and then be glued. really thou? heli coils?
Latest Update
Posted: Tue Jan 12, 2010 10:03 pm
by Wheelman-111
Greetings:
Installed JW's expansion chamber/muffler 2 weeks ago, just before the Deepinnaharta Deep-Freeze. (Details in Deepinnaharta Depression...). I have since learned (from Bakaracer and others) that an upjet is MANDATORY when you free up the exhaust to this degree.
I thought I'd add a comment here that the Nikasil bore endured a couple weeks of running
LEAN, without catastrophe. Judging by the plug and how much improvement it showed when I went from a 150 to a 165 main, it should have fried, but didn't. Maybe the cold was some protection, but I feel pretty good about Nikasil's durability. Knocking wood now...
730 miles or so, run time about 30.