Fairmont 2.0 (forged lq4, s480, 800whp, under new management)
11-24-2012, 03:08 PM
#1441
TECH Apprentice
Ok i do understand hardparts fail and that sucks even good expensive parts but matt your batch firing the injectors and waste firing the plugs on the microquirt is it possible your having an ignition event in #7 since 7 is allways the hottest cylinder? Hell ive even seen the old Grand Nationals light off a cyl just from pressure...
I have never seen either of those contribute or cause a preignition event, and having Grand Nationals and tuning Turbo Regals since 1996 I have never heard of the TRs Preignite on E85 or gas/race fuel. Unless there is oil in the combustion chamber somehow, or too hot of a plug.
Although, E85, and Especially Methanol, will go straight to preignition, skipping the detonation, altogether. But that is usually because of too hot of a plug, or too lean on the fuel. Or like I said oil in the chamber.
Also,I was wondering if you would have problems with keeping gaskets in that engine, after torching that head that bad. The block had to have had some damage to the deck. Did it get decked before the new head and gasket were installed? With my old Supra, once you blew a head gasket there was alot of work to get that surface right for another metal gasket to seal correctly.
11-25-2012, 07:21 AM
#1448
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When I was running really high volumes of 70% meth (injected after the intercooler), I was concerned that the distribution might be far less than ideal given that we are using intakes designed for N/A dry flow... Still, the meth was tolerant of a rather rich mixture, and nothing bad seemed to come of it. I figured that if the distribution was sufficiently bad to cause a problem that the plugs and/or combustion chamber should show evidence of it.
What intake are you thinking of trying?
11-25-2012, 08:05 AM
#1451
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I think it's accurate to say that the methanol cools the IATs better than the water through evaporative cooling because the methanol evaporates more readily upon injection into the heat of the intake tract. Water on the other hand, cools the actual combustion chamber temps better than the methanol because of its higher specific heat. I too think that a blend probably has the best effect, but I never did try the straight methanol and a lot of people swear by it.
Last edited by Tjabo; 11-25-2012 at 08:14 AM.
11-25-2012, 12:49 PM
#1453
On The Tree
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From an engine builders point of view, I'd quit throwing used head gaskets on the thing and use new gaskets that are designed for boost. And there's nothing wrong with using ARP bolts or studs a million times unless they're overtorqued and stretched. You have to use the right lube (ARP Ultra, in the blue packaging) and follow the manufacturers directions, not what some Joe said to do on the internet.
Bad *** car though, love that the big money guys hate it and say you can't do that.
Bad *** car though, love that the big money guys hate it and say you can't do that.
11-25-2012, 01:54 PM
#1454
Staging Lane
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I just read this whole thread front to back over the last 2 days and I just realized all this was in under a year WOW!! I'm a big fan of your work. Come January I'm starting my build in search of 550rwhp. I'll be in boxing you. Keep up the great work
11-25-2012, 05:02 PM
#1457
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sarg i thought about something like that as well. i was going to use a nitrous/fuel soleniod operated on a hobbs switch. plenty of jet sizes to choose from too!
11-25-2012, 05:36 PM
#1459
Allow him to make the power the car should on the boost numbers. No reason it can't make over 800rwhp on a 7675, the magnum 80 doesn't seem to be cutting it. I gave other suggestions on what to do, I like to drive my car though and be simple vs working on it and tearing it down all the time.