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SVT Performance (2002-2004) The place to chat about any 2.0L SVT DOHC Zetec engine performance, tuning and exhaust related upgrades.

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Old 07-11-2010, 11:31 PM   #1
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Vehicle is 04 svt. Ok so I was changing spark plugs, and I'm about 90% sure #2 is stripped out so I stopped. While at work today I found a new head on ebay for $400 so bought it. Now I have access to a lift, and full set of tools so plan on doing this myself. Along with my "trusty" chiltons manual. When I got home from work I ordered a felpro gasket kit (upper), The Samco hose kit's along with the 2 other hoses needed for a SVT, and ARP head studs (got caught up in the shopping mood) from cfm, and the thermostat housing from HT performance. I also picked up a water pump, timing belt, and idler pulleys on ebay. Now my question is besides an accessory belt, and coolant what else will I need to pick up to change out the head? I'm going with the theory of needing new cam bearings since I'm putting them into a new head. Is that accurate? Also as a side note I'm going to see if I can find a local shop to do a little port n polish on the new head. Nothing special just clean up the rough area's. Basically leaving the car stock, besides letting the head breath a little better. So would it be in my best interest to look into an exhaust system to help the head breath? Should I look into a bigger tb or maf? (exhaust and intake would be at a later time) By the way I'm new here if you haven't noticed.


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Old 07-12-2010, 06:28 AM   #2
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timing belt
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Old 07-12-2010, 08:58 AM   #3
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^that.

you might also need to pick up some buckets and/or shims to get the clearances in check on the valve train. when you pull everything off of the current head, mark everything for each cylinder and valve (like intake #1 cyl #1, intake #2 cyl #1, etc) because once you mix up the buckets, itll be a headache
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Old 07-12-2010, 09:16 PM   #4
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You sure are planning a LOT of work because of a stripped out plug! You can fix the threads pretty easily, even with the head still on the motor. The cams run in the aluminum of the heads. The stock SVT head flows pretty well from all accounts and it is much easier to screw up the ports than make them better. A high-flow cat is worthwhile for power. Other than that, seriously, you are much better off just fixing your existing head rather than opening the big can of mess you are planning to. Just my opinion.
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Old 07-12-2010, 09:27 PM   #5
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Well wouldn't of bough half, if any of it if I hadn't found that head on ebay for 400 bucks. Decided to pick it up, and get it port and polished then install it. I'm still up in the air about going FI with the car, or leaving it stock. Picked up the billet t-stat housing after reading the horror stories about the plastic one failing a lot. figured I'd upgrade the hoses while I have the coolant drained. Head is being fixed at the dealership, and will have the car back tomorrow. I guess I just kinda jumbled it together, and made it sound like I was making a big deal about the stripped spark plug.
**Just noticed you said it's easier to screw it up than make it better. With a port and polish. Something to consider. Thank you

Last edited by LilFociSVT; 07-12-2010 at 09:29 PM. Reason: adding stuff
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Old 07-13-2010, 06:23 PM   #6
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My pleasure! If you read a bunch on the SVTF, the guys at the Factory picked all the 'low hanging fruit' on this engine. Your local head expert probably isn't going to make improvements by hogging things out, and polishing what shouldn't be polished is going the wrong way.

Tom (who posts here a lot) probably has more experience than most on these engines and I think he'd concur that extensive head work isn't cost effective as the stock head flows really well. The limitations are elsewhere in the engine.

It would be nice to have an extra head laying around....just in case. It will always be worth good money whether you use it or not. Beyond a tune and HFC, if you want more.....FI is your friend. I, personally, think the engine runs great for its' displacement and enjoy using it. The SVTF's seem to be dying left and right....and there weren't that many of them to begin with so your car is getting rarer every day. Being gentle on the mods so you can sell it someday might be the best investment advice anyone has given you lately.

Hope the guys at the Stealership fix you up.
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Old 07-14-2010, 07:56 AM   #7
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Welcome to the team!
Have you looked at just going the built engine route? I'm pretty pleased with my car with the small stuff I've done so far (see my sig), but I am looking at built engines now.
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Old 07-22-2010, 09:48 PM   #8
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Thanks for the replies. Haven't been on here much lateley. Yup the Stealership got her all fixed, and cost me a bit. Think I'm gonna save the head for a rainy day. I need to get around to ordering a HFC. Tried to buy one on ebay but ran into paypal problems. Guy contacted me about it. I just need to get around to sending him money. Shipping ain't cheap to Hawaii though. Might wait till I get back to the mainland to look into a built engine, and FI as I discovered the plans to rebuilt a track out here are stalled.
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Old 07-23-2010, 11:44 AM   #9
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welcome to svt and like many have already said not much improvement will come from porting and polishing the head.
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Old 08-01-2010, 10:33 PM   #10
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I didn't see a 12-pack on the list...
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