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Old 06-08-2010, 08:19 PM   #1
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Build for 350-400

So due to compression being low in cyl 1, I decided to pick up a motor to build for boost. The most I would want for this car would be 400. The car will realistically be around 320-350. So those of you that actually have experience with this, what kinda parts did you use?

The supertech pistons with eagle rods looked to be a pretty good combination without breaking the bank too much. Figured I'd do clevite bearings as well.

as for the block I got, I was going to have it decked until it was flat, and maybe a slight hone. like a 20 over or something. any other recommendations for that?

and as far as the head, I'm not sure what to do. Not really any kind of aftermarket cams for the svtf, unless I was to do a custom grind. The motor's timing belt snapped, bending two valves. It had 95k on the motor, so not sure If I should replace all of the valves with factory or upgrade. Then again, no real point to upgrade anything in the valvetrain (springs, retainers, valves) if I'm keeping the stock cams in there. Also, not sure if I'd see any gains revving much higher than the factory rev limit on the size turbo I currently have. Not really looking to port the head either. Trying to keep this somewhat of a budget build.

so,

1. what piston/rod combo do you recommend?
2. any recommendations for machine work?
3. what should be replaced on the head/valvetrain? keep it factory or go aftermarket?
4. any other tips?

I want to have a nice broad powerband. I don't really care about straight line racing. I'm going to be doing a lot of road racing.

any links to any parts would be very helpful.


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Old 06-08-2010, 08:28 PM   #2
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From what I've gathered, everyone agrees that Supertech/Eagle is a very very solid combo that can support more power than you would ever want.

No need to bore more than .007" if you ask me. .020" is just taking away cylinder material needlessly. Sure, it will give you some displacement, but many people stick with .007".

Stock SVT head works plenty well. If you wanted just a little machine work, you could have the exhaust side ported. The intake valves on the SVT are larger, but the exhaust ports are the same size as Zetec. Other than that, stock springs/retainers/cams are all up to the task. John never revs higher than 7000 and his car is damn fast.

What turbo do you have?
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Old 06-08-2010, 08:35 PM   #3
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well, what I'll prob end up doing, is once I get the pistons, take em down to the machine shop to have them measured exactly and have the block bored to those specs. cuz if the bore is too big, wont that cause excessive blow by?

as far as porting the head, not sure if I'll do that. Idno how comfortable I am to have some machine shop port a focus head. IF I did it, and thats a big if, I'd have someone that knows about focus heads, and has done it before, to take a little material off. And at that point, I'd probably do something with the cams. But then thats starting a whole new adventure. So we'll see.

and I've got the Comp turbo. Tom guarantees it'll hit 300-320, and says it'll max out @ maybe 350. not sure if I'll be sticking with that one for a long time once I do this build.
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Old 06-08-2010, 08:53 PM   #4
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A Focus head is no more special than a Civic head. If a shop knows how to port, they can port your head.

Comp Turbo, psssh. Stop dickin' around, get a *real* man's turbo, and go with the gt3071.
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Old 06-08-2010, 08:59 PM   #5
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Quote:
Originally Posted by mikealicious View Post
So due to compression being low in cyl 1, I decided to pick up a motor to build for boost. The most I would want for this car would be 400. The car will realistically be around 320-350. So those of you that actually have experience with this, what kinda parts did you use?

The supertech pistons with eagle rods looked to be a pretty good combination without breaking the bank too much. Figured I'd do clevite bearings as well.

as for the block I got, I was going to have it decked until it was flat, and maybe a slight hone. like a 20 over or something. any other recommendations for that?

and as far as the head, I'm not sure what to do. Not really any kind of aftermarket cams for the svtf, unless I was to do a custom grind. The motor's timing belt snapped, bending two valves. It had 95k on the motor, so not sure If I should replace all of the valves with factory or upgrade. Then again, no real point to upgrade anything in the valvetrain (springs, retainers, valves) if I'm keeping the stock cams in there. Also, not sure if I'd see any gains revving much higher than the factory rev limit on the size turbo I currently have. Not really looking to port the head either. Trying to keep this somewhat of a budget build.

so,

1. what piston/rod combo do you recommend?
2. any recommendations for machine work?
3. what should be replaced on the head/valvetrain? keep it factory or go aftermarket?
4. any other tips?

I want to have a nice broad powerband. I don't really care about straight line racing. I'm going to be doing a lot of road racing.

any links to any parts would be very helpful.
Its the same set up that I have bored .007 over same bearings stock head and Im running 20 psi boost trust me its fast enough and I got The Comp turbo from Tom thats a really good set up you will like it if you stick with that turbo
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Old 06-08-2010, 09:03 PM   #6
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Its the same set up that I have bored .007 over same bearings stock head and Im running 20 psi boost trust me its fast enough and I got The Comp turbo from Tom thats a really good set up you will like it if you stick with that turbo
what kinda power you putting out? and theres different model comp turbos. not sure if you and I got the same one.
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Old 06-08-2010, 09:14 PM   #7
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Never been on the dyno all remoted tuned same comp turbo Tom sells with his Kit so its probally the same one But if I had to guess I am around 340whp
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Old 06-08-2010, 09:17 PM   #8
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oh wow. thats sick. and you're on the supertech pistons/eagle rods? how much boost? you running a return line for your fuel? or factory pump w/b-a-p?
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Old 06-08-2010, 10:22 PM   #9
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oh wow. thats sick. and you're on the supertech pistons/eagle rods? how much boost? you running a return line for your fuel? or factory pump w/b-a-p?
Yep supertech pistons/egal rods clevite bearings no return for fuel and bap is only 3/4 turned up its a beast its Not anything like Johns 03orangesvt he has got some tricks up his sleve lol. But it screams
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Last edited by Earls32; 06-08-2010 at 10:25 PM. Reason: miss spelling
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Old 06-08-2010, 10:23 PM   #10
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large frame turbos and 350-400whp on a focus that will see road course duty will be a handful and a half, i only make 300-330 on a 17x9/255 tire up front and its still a handful
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