Darkblade Posted October 30, 2015 Report Posted October 30, 2015 ok im in the process of a leakdown test and there is a bad leak on the part that the intake screws into it was drilled through like most banshees and it hold no pressure from the leak down test does will air leaks cause a drop in compression and how can i seal the hole to stop it from leaking Quote
Power_Man Posted October 30, 2015 Report Posted October 30, 2015 part that the intake screws onto? you talking about the cylinders? A picture with you outlining where you know the leak is might help some. Quote
Darkblade Posted October 30, 2015 Author Report Posted October 30, 2015 here is the hole im talking about they are common so i have heard but mine leaks air bad so how can i seal it Quote
Power_Man Posted October 30, 2015 Report Posted October 30, 2015 I've never heard of that, but I have not been around that long either. Either way I myself would take the cylinder off and take it to a welding shop and have it TIG welded. But if it is that common I'm sure guys have easier quicker ways. Quote
sheerider11 Posted October 30, 2015 Report Posted October 30, 2015 That hole has no connection to the intake. The gasket is leaking. I've ran plenty of motors with the hole there. Copper spray or you can use 1211 very lightly on the gasket. Quote
trickedcarbine Posted October 30, 2015 Report Posted October 30, 2015 That hole has no connection to the intake. The gasket is leaking. I've ran plenty of motors with the hole there. Copper spray or you can use 1211 very lightly on the gasket.^ That. A little 1211 on the gasket, goes a long way. Quote
Strm Trpr Posted October 30, 2015 Report Posted October 30, 2015 I've always assembled gaskets using regular motor oil on all of the motors I've worked on, and that includes boosted Mitsu 4G63's!! Never leaks, and super easy to remove. But there is one caveat. The surfaces have to be OEM. If any sort of rotary scotch brite pad is used to remove a previous owners 1211 or RTV bullshit, the gasket sealing surfaces are fuckt and you will be forever using RTV or the like. Quote
Tedder Posted October 30, 2015 Report Posted October 30, 2015 sheerider11 is right! The gasket is leaking. It just so happens the air is escaping from that point. Lots of cubs have holes along their intake tracts...It's the bottom of the bolt holes, below the threads. 1 Quote
camatv Posted October 30, 2015 Report Posted October 30, 2015 i stopped using gaskets on the intakes about 2 years ago. right after i started using leakdown tester a LOT... i just straight import grey, mega grey, hondabond, yamabond, grey etc whatever you use.. and naysayers,, you just sealed the complete case together metal to metal.. why is this any different its leaking into the threads from the inside of the intake there is a tenny tiny bridge between the inside of the intake to the threaded area. yours is probably cracked or some ported screwed it up. i see it a lot on ported, or overly tightened cylinders or threads filled with rtv or some sort of sealer Quote
mike0chek Posted October 31, 2015 Report Posted October 31, 2015 my whole motor lives on 1211.... fuck 2nd guessing gaskets these days..... 1211 shit right on build = passing leak down 99.999999% of the time vs hoping a gasket has sealed right. im with you there man if theres 2 surfaces, then im applying 1211 lol Quote
mike0chek Posted November 2, 2015 Report Posted November 2, 2015 ya it seals everythingive ever tried and it also comes off easy during rebuilds Quote
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