Best subaru engine to modify

[SilverSpear]

Originally Posted by svxsubaru1

Cobb tuning is usally pretty damn expensive. I bet if you could find out what you want the camspecs to be you have all 4 done for under $600, maybe substanely less.

I would try, delta cams almost every NA 2.5, 2.2, 1.8 subie ej uses there cams when they switch up. I bet they could even come up with some good specs for the SVX. I also heard that they regrind 2 cams for a $130 U.S. at least for the 4cylinders. I havent contacted them about the SVX maybe some one else would want to. I just dont have the money, or time to deal with it now.
http://www.deltacam.com/index.php
And to stay on topic, for the cheapest set up, a ej22t, with some new heads, and a BFT. You could probley spend like 1K on a good block and some 2.5 liter heads. Then you would have a engine that could easily push 20 PSI relibley. Throw some pistons in it, and you could even go high 25PSI. For ultimate potential i would say the EG33 becasue nothing replaces displacment in the end.

thank you for the link. I am not planning to insert a turbo in my EG33, just rather tune the cams while it is kept N/A.

I will contact delta cams myself and post the reply in this thread

[SilverSpear]

Danny,
We have found that increasing the lift and duration on the intake cams and leaving the exhaust cams in their stock configuration gives us the best hp and toque improvements.
We have been getting about 10 to 15% gains by grinding them this way.
The cost is $125 each, and we have to grind your cores.
Thank you,
Scott



Yeah right......................

[Electrophil]

Originally Posted by SilverSpear

Danny,
We have found that increasing the lift and duration on the intake cams and leaving the exhaust cams in their stock configuration gives us the best hp and toque improvements.
We have been getting about 10 to 15% gains by grinding them this way.
The cost is $125 each, and we have to grind your cores.
Thank you,
Scott



Yeah right......................

hmmmm... To increase the lift, wouldn't you need more material on the cam lobes and not less? They plan on grinding "more" material on the cam?

[svxsubaru1]

Originally Posted by Electrophil

hmmmm... To increase the lift, wouldn't you need more material on the cam lobes and not less? They plan on grinding "more" material on the cam?

I think they aculey weld on the cam, and then gring it off.

[demonsvx]

Ive seen a technique where they added material to cranks and cams, its called immersion welding. They pour powdered flux over the part which is in turn welded with no spark. They then grinded the "new part" to the specs they needed ie stroker crank or modified cams. It was rumored to be cheap, strong, and durable. Ill try to find the article in a old magazine.

[TomsSVX]

weld and grind is what they call it. adds material to the cam and then they are ground to the specs specified by the customer

Tom

[SilverSpear]

Originally Posted by TomsSVX

weld and grind is what they call it. adds material to the cam and then they are ground to the specs specified by the customer

Tom

Tom does it really work in your opinion??? i mean the material will not wear out quickly? i am wondering... Do you really trust this way of modifying the cams???

[Matthewmongan]

in a perfect world the ej22t would be optimal. however, life isnt fair. if your going to modify an engine of the subaru variety you would be foolish to undertake anything other than a ej20t. they have the largest RnD pool as they have been in the aftermarket limelight the longest. they are aforidable and reliable. by comparison the 2.5 would be unwise. at first one would think that the added displacement would be better, but the .5l comes at a price; durability.

[svxsubaru1]

Originally Posted by Matthewmongan

in a perfect world the ej22t would be optimal. however, life isnt fair. if your going to modify an engine of the subaru variety you would be foolish to undertake anything other than a ej20t. they have the largest RnD pool as they have been in the aftermarket limelight the longest. they are aforidable and reliable. by comparison the 2.5 would be unwise. at first one would think that the added displacement would be better, but the .5l comes at a price; durability.

I dont really agree, almost every ej series engine is identical (they really only change stroke and bore), almost any thing that could be aplied to one could be aplied to another. You can swap heads, headers, cams, ect. The only advantage comes from a engine that was overbuilt more form subaru, or one that has the best combination of parts for the least amount. Which i belive is the ej22t for a block, and some decent 2.5 liter heads.

[Landshark]

Originally Posted by Matthewmongan

if your going to modify an engine of the subaru variety you would be foolish to undertake anything other than a ej20t. they have the largest RnD pool as they have been in the aftermarket limelight the longest. they are aforidable and reliable. by comparison the 2.5 would be unwise. at first one would think that the added displacement would be better, but the .5l comes at a price; durability.

even though there is more variety in the aftermarket for the 2.0L due to its age, finding aftermarket parts for the 2.5L is certainly not going to be a scavenger hunt - there is a HUGE aftermarket for it.

i wouldn't say the 2.5L STi engine isn't durable, either.

[svxsubaru1]

Yeah there seems to be a a stock blcok 2.5 liter the puts out 500+crank hp posted on nasioc every week. Definitley not a week engine.

[TomsSVX]

Originally Posted by SilverSpear

Tom does it really work in your opinion??? i mean the material will not wear out quickly? i am wondering... Do you really trust this way of modifying the cams???

In theory it should work. I used to be a Chevy small block kind of guy before I got into the import scene when I got my SVX. Cams, cranks, pistons, and rods were available to anyone from anywhere, so modifying stock parts would be useless when you could buy custom parts a lot easier and cheaper. It may be worth while for someone to have the cams welded and ground for more lift more duration and maybe a little rotation, depending on the application. The only problem is, no one has tried it. If you want to go blow $300+ dollars on a product that could hinder performance rather than gain , go ahead. Until it is tried, we are all just blowing smoke.

Tom

[Chiketkd]

Originally Posted by TomsSVX

Until it is tried, we are all just blowing smoke.

-Chike

[svx_commuter]

Originally Posted by svxsubaru1

I dont really agree, almost every ej series engine is identical (they really only change stroke and bore), almost any thing that could be aplied to one could be aplied to another. You can swap heads, headers, cams, ect. The only advantage comes from a engine that was overbuilt more form subaru, or one that has the best combination of parts for the least amount. Which i belive is the ej22t for a block, and some decent 2.5 liter heads.

Is there a timing belt that fits this block and head combination?

[huck369]

Originally Posted by svx_commuter

Is there a timing belt that fits this block and head combination?

Yes........