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> Got Some Questions, engine mods
shorty_27
post Sep 29 2008, 06:20 PM
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i have a 97 eclipse gs 5 speed i want to do alot of work to it. its my new project car and i know alot about the 4g63 but not alot about the 420a. i want to sleev it forged crank, bigger cam shaft, bigger injectors, port and polish the head, new intake, and anything else that you can think of that i might need for a turbo set up. prices and web sites would be great. thanks for the help.
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militaryman108
post Sep 29 2008, 06:24 PM
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Like many topics similar to this one you need to tell us a goal so that we may recommend whats best. You will prolly need all new forged internals unless you aren't planning for anything more than 250 hp more.

Check out http://www.turbosystem.com/
~This is the hahn race craft sight. Has great kits for the 420a going turbo.
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jonbonazza
post Sep 29 2008, 06:29 PM
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God I am tired of seeing these posts... I think we need a intro page to the site that says "You must search before you post or your post will be deleted" And make a way so that they are forced toread it. >.>
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shorty_27
post Sep 29 2008, 06:31 PM
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well thanks for the help but is it possible to take the 4g63 manifold and bolt it on my 420a
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jonbonazza
post Sep 29 2008, 06:46 PM
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QUOTE(shorty_27 @ Sep 29 2008, 07:31 PM)
well thanks for the help but is it possible to take the 4g63 manifold and bolt it on my 420a
[right][snapback]210155[/snapback][/right]


No.
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dannwo1
post Sep 29 2008, 11:43 PM
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No need for sleeving. Just get it .20 over. No need for a forged crank. Stocker can handle alot. Get some better connecting rods tho. And pistons. Go either high or low comp. on the pistons depending on your devious goals. :grin:
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pwee05
post Sep 30 2008, 08:02 AM
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you can't sleeve a 420a, that's a honda thing. you also DONT NEED:

to port and polish the head
a new intake
bigger cams
and the things mentioned in the reply above this (except the rods and pistons part)

if you go with low compression pistons you have a 400hp capable engine
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BigRedMonster
post Sep 30 2008, 11:19 AM
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Check the Marketplace for Turbo kits. ;)
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stea1thviper
post Oct 5 2008, 12:09 PM
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QUOTE(militaryman108 @ Sep 29 2008, 04:24 PM)
Like many topics similar to this one you need to tell us a goal so that we may recommend whats best.  You will prolly need all new forged internals unless you aren't planning for anything more than 250 hp more.

Check out http://www.turbosystem.com/
~This is the hahn race craft sight.  Has great kits for the 420a going turbo.
[right][snapback]210147[/snapback][/right]


strange, that site says you don't need to upgrade your engine internals for either their stage 1 or 2 turbo kits for the 420a. i've read through every sticky on this board in its entirety and it sounds like without forged internals these turbo kits are a disaster waiting to happen.
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jonbonazza
post Oct 5 2008, 12:12 PM
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The stage 1 and 2 turbo systems are only runnning at 7psi on a very small turbo. If you want to run any more than that or get a bigger turbo, you will need to upgrade internals.
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stea1thviper
post Oct 5 2008, 12:29 PM
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interesting. so you don't need forged internals to get a rs/gs faster than a gst/gsx. i read in one of the stickies that to push a 420a above 220ish hp (without the internal upgrades) for too long was just asking for it. hahns seems to beg to differ since they claim a hp of 200-225 with the stage 1 kit, and 250-275 with the stage 2 kit.
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jonbonazza
post Oct 5 2008, 12:43 PM
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with the stage 1 or 2 kit you will have around the same hp (approximately) as the GST.
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stea1thviper
post Oct 5 2008, 04:11 PM
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so i guess their claims at 250-275hp for the stage 2 is a marketing gimmick and just way overrated then. good to know.
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shorty_27
post Oct 5 2008, 11:35 PM
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i checked up for rods and pistons about 750, and arp head studs are going for about 117, the only thing left would be a metal head gasket, i found all this stuff on ebay but is there any other places out there that are cheaper and if any body has a turbo set up they want to sell let me know cuz i am in the market to buy one. but if you want lots of power to internals it will be worth the money.
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jonbonazza
post Oct 6 2008, 12:53 PM
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QUOTE(shorty_27 @ Oct 6 2008, 12:35 AM)
i checked up for rods and pistons about 750, and arp head studs are going for about 117, the only thing left would be a metal head gasket, i found all this stuff on ebay but is there any other places out there that are cheaper and if any body has a turbo set up they want to sell let me know cuz i am in the market to buy one. but if you want lots of power to internals it will be worth the money.
[right][snapback]212384[/snapback][/right]


I wouldn't trust ebay for internals.

Best bet is somewhere reputable like http://www.slowboyracing.com
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dannwo1
post Oct 7 2008, 01:15 AM
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I got my JE pistons and Eagle connecting rods from ebay. Came in factory sealed boxes. The same stuff slowboy will send you, but at 3/4 the price.
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