HIGH COMPRESSION TURBO
If you got the balls to tune it.
I know I have....
| 4g61t.org http://4g61t.org/forum/ |
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| 4G15 tuning info http://4g61t.org/forum/viewtopic.php?f=17&t=39571 |
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| Author: | jellyfish420 [ Mon Oct 23, 2006 11:09 pm ] |
| Post subject: | Re: 4G15 tuning info |
Quote: OK, this is what we got so far to free some more ponies: so you can use the x1 pistons to up compression to 10.5:1 AND turbo???
Rising compression ration to 10.5:1 by using Excel X1 pistons This all -except the turbocharging - should give you some realistic 25-30HP. The turbo could give you easily 20-30 HP more. Did I forget anything? |
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| Author: | xlr8 [ Tue Oct 24, 2006 10:05 pm ] |
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You *could* but you'd want to be damn sure about your tuning as any detonation would destroy those pistons as they aren't particularly strong. IMHO you'd be better off sticking with stock compression if you intend to turbocharge the motor using stock pistons and even then no more than 12psi (with an intercooler). |
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| Author: | jellyfish420 [ Tue Oct 24, 2006 11:22 pm ] |
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Quote: You *could* but you'd want to be damn sure about your tuning as any detonation would destroy those pistons as they aren't particularly strong. IMHO you'd be better off sticking with stock compression if you intend to turbocharge the motor using stock pistons and even then no more than 12psi (with an intercooler).
i didn't think it would be very wise. i just wanted it to be clear for anyone else reading this post.what would yeild a higher gain....10.5:1 compression, and other mods mentioned or turbo? |
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| Author: | GinSonic [ Wed Oct 25, 2006 12:31 pm ] |
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TURBO!!!!!!! FTMFW! G. |
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| Author: | Under-DOG [ Tue Jan 08, 2008 8:33 am ] |
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HIGH COMPRESSION TURBO If you got the balls to tune it. I know I have....
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| Author: | azrin95 [ Thu Aug 07, 2008 3:37 am ] |
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Turbocharge........ td04 twin fin e-manage/dastek unichip piping bov custom manifold head metal gasket gsr intercooler fule regulator fuel pump gsr injector Hm.... |
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| Author: | Devolution [ Thu Jan 29, 2009 3:39 am ] |
| Post subject: | Re: 4G15 tuning info |
so with the new forum paths, it seems none of those links in the first post work anymore? could someone perhaps fix them up so new folks still running the 4G15 can get at the information a little easier? |
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| Author: | Mechacode [ Thu Jan 29, 2009 6:14 pm ] |
| Post subject: | Re: 4G15 tuning info |
Fixed. |
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| Author: | 89D15CRX [ Sun Aug 02, 2009 4:21 pm ] |
| Post subject: | Re: 4G15 tuning info |
Hey as far as turning the cam timing back one tooth, how much do I have to shave off of my distributor to be able to make 7* BTDC? Is 7* better than running 5* BTDC? I'm asking because I'm about to install my timing belt. |
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| Author: | Nemesis [ Sat Oct 03, 2009 11:45 am ] |
| Post subject: | Re: 4G15 tuning info |
When I was reading I saw about 1/4" you need to make the hole bigger. I personally would go as far ass I can without opening the hole all the way through... If that makes any sense. Next weekend I will do this because I am getting a new timing belt. But right now I advanced the timing on the distributor as far as it goes, and I'm running premium and the 4G37 goodies. I'm hoping that with the cam timing trick I will actually feel more of a power increase. BY THE WAY: Relieve the pressure in the cooling system BEFORE swapping the throttle body. I got sprayed with moderately warm coolant. |
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| Author: | mikbik [ Mon Feb 08, 2010 7:30 am ] |
| Post subject: | Re: 4G15 tuning info |
mandrel bent piping, which is better 2" or 2.25" diameter for the 4g15 |
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| Author: | Mechacode [ Mon Feb 08, 2010 4:26 pm ] |
| Post subject: | Re: 4G15 tuning info |
I would go with 2" to keep the velocity. |
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| Author: | mikbik [ Mon Feb 08, 2010 9:14 pm ] |
| Post subject: | Re: 4G15 tuning info |
Quote: I would go with 2" to keep the velocity.
does anyone do and fabricate SS downpipe for the CSM? specially on the curve bend where the pipe turns and up to rear bar to reach the muffler.
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| Author: | Mechacode [ Mon Feb 08, 2010 9:41 pm ] |
| Post subject: | Re: 4G15 tuning info |
Nobody makes anything specific for a csm, at least not these days. |
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| Author: | mikekost [ Tue Nov 20, 2012 1:34 am ] |
| Post subject: | Re: 4G15 tuning info |
I know this has had no new posts in quite a few years but i just bought a 93 colt 1.5 auto for my gf and im looking to have a lil fun dickin around with some parts to make it a lil zippier for when i have to drive it (my car is a 95 skyline GTR) now reading through ALL this info has taken quite some time, im located in canada and parts are a bi*ch to find up here in wreckers aparently, what a good route to take with this car, im liking the TB swap and what not but whats the best bang for your buck with this car.... Any insight is greatly appreciated 
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