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Timmeh
Moderator
Posts: 5974
Joined: 06 Nov 2004
Location: Perth WA, Australia
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 Posted: Wed May 14, 2008 11:10 am Post subject: |
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I'd get the heads serviced before fitting them. While they are being serviced get them to fit new valve springs that would suit that cam.
Part of servicing the heads would be new valve stem seals. You can buy a top end gasket kit which has all the bits you need. My engine shop guy sorted all that out for me.
Also get a rollmaster timing kit. They aren't very expensive. |
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castlegreyskull
Cruise Moderator
Age:25
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Location: maryland, newcastle NSW, Australia
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| Posted: Wed May 14, 2008 11:14 am Post subject: |
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| The heads are brand new (only test fired) they are stamped with 2000 compliance date. Would i still need to service them? |
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Timmeh
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Posts: 5974
Joined: 06 Nov 2004
Location: Perth WA, Australia
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| Posted: Wed May 14, 2008 11:25 am Post subject: |
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| No probably not. I thought they were second hand. |
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fairy v8
Fordmods - Smokin em up
Posts: 280
Joined: 03 Jan 2006
Location: tauranga New Zealand
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| Posted: Wed May 14, 2008 3:17 pm Post subject: |
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| i would still get some good quality springs to suit that cam |
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xr8ute
Fordmods - Getting Side Ways
Age:28
Posts: 646
Joined: 02 Dec 2004
Location: Wollongong NSW, Australia
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| Posted: Wed May 14, 2008 5:41 pm Post subject: |
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The std springs on GT40P heads are pretty ordinary to say the least. I would think they are too light for a cam like the E303.
Im not even sure there would be enough spring height on the exhaust side. They are pretty short on the std heads when you take into account the lower groove for valve locks and the rotator on the exhaust side.
There should be a single spring setup that will work OK with the E303 without having to machine the spring pockets. Talk to the guy doing your heads. Ford should have a recommendation for spring pressures for the E303 in the Ford Racing catalogue... |
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banarcus
Fordmods Tyre Shredder
Age:33
Posts: 331
Joined: 29 Nov 2004
Location: Kurri Kurri NSW, Australia
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| Posted: Sat May 17, 2008 2:51 pm Post subject: |
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Are the valve springs on the GT40s any different to those fitted on E7s? I used the stockies on my setup and keep the revs down. The torque from this cam in the mid range is so much better than the stocker, you dont need to rev it to get it going. Nevertheless, the revs do come very easy when doing the heads, manifold and cam.
castlegreyskull, you might have to do something with your diff ratio though, mine is a pig coming out of small roundabouts, I have to work the clutch a bit hence the need for a XR spec diff ratio. Your ECU wont have any problems with the idle though, mine idles nice and bumpity-bump. My LPG on the other hand....... |
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castlegreyskull
Cruise Moderator
Age:25
Posts: 3751
Joined: 14 Dec 2005
Location: maryland, newcastle NSW, Australia
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| Posted: Sat May 17, 2008 3:00 pm Post subject: |
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Im liking my choice more and more with th response im getting from people banarcus!!!
Yeah i have thought about the diff, i will see how it goes to begin with, but yeah i will be looking at a diff ratio after everything is installed. Funds have just been a bit depleted lately  |
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banarcus
Fordmods Tyre Shredder
Age:33
Posts: 331
Joined: 29 Nov 2004
Location: Kurri Kurri NSW, Australia
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| Posted: Sun May 18, 2008 10:34 am Post subject: |
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If you ever want to see how the cam performs in a LWB, we can bump into each other(cough mini newy meet) |
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chrisredden
Fordmods Stock as a Rock
Age:34
Posts: 124
Joined: 19 Mar 2005
Location: mundulla SA, Australia
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| Posted: Sun May 18, 2008 3:22 pm Post subject: |
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get new head bolts, They are torque to yeild type.
buy a vrs kit, this kit will cover all that you require to do the job including
valve stem seals which you should do if heads have been sitting around.
you'll def need valve springs, retainers locks and correct lenght push rods.
Not sure if you'd have to notch your pistons for valve/piston clearance with the E303 cam lift or not. A must check to do. 
You could clean up the heads, depends on how far u wanna go |
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Macca
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Age:36
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Location: Singleton NSW, Australia
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| Posted: Sun May 18, 2008 9:31 pm Post subject: |
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| castlegreyskull wrote: | | The heads are brand new (only test fired) they are stamped with 2000 compliance date. Would i still need to service them? |
Did you buy these off Yella Terra, are these the stocky GT40 heads they didn't CNC port etc? Still much better heads than E7 if they are. |
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