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Post by coopdog on Feb 16, 2011 19:05:47 GMT 1
i have a large valve head ready for my 1380 engine build,
but its gonna be awhile bofore i do that,
i want to fit it to my 998 block, i know i have to get work done to it to fit,
if i get the work done will i still be able to use it on the 1380 build??
what has the work done to fit the block or the head?
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ljonez
turbo
Built not bought
Posts: 3,734
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Post by ljonez on Feb 16, 2011 19:39:48 GMT 1
The best option is to get pockets cut into the block. if ur having a rebore its the perfect time to do it. It what I did on my fast road 998. No need to touch the head.
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Post by coopdog on Feb 16, 2011 19:56:48 GMT 1
could i put the old head back on if i needed too?
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ljonez
turbo
Built not bought
Posts: 3,734
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Post by ljonez on Feb 16, 2011 20:10:53 GMT 1
Yep
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Post by coopdog on Feb 16, 2011 21:50:00 GMT 1
wOOOO
what cam should i get??
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Huntyfm
1440cc
If you cant fix it with a hammer its electrical.[F4:Huntyfm]
Posts: 2,633
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Post by Huntyfm on Feb 16, 2011 21:53:29 GMT 1
thats a whole other can of worms right there
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Post by coopdog on Feb 16, 2011 22:18:18 GMT 1
well dont just say that,
that aint helpin is it
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Post by coedy on Feb 17, 2011 0:25:19 GMT 1
All depends on the exact dimensions of the head, If its going in the 1380 or the 998, where you want your power to come in, how long you want the power for (a lot of power in a short rev range, or less power across a wider rev range), if you plan on doing other mods besides the head and cam, etc etc etc etc... As hunt said, another tin of worms. And then after that is sorted out you will have the problem of how are you going to time its ignition if its a crazy cam, megajolt, wrestle your dizzy to try and get it close, send your dizzy off to be modified for the job or get a dizzy more suited to the cam. So even more cans of worms will be opened.  |
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ljonez
turbo
Built not bought
Posts: 3,734
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Post by ljonez on Feb 17, 2011 1:06:14 GMT 1
Any decent engine builder will tell yoy to pick a cam first then build an engine to suit it.
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Post by jackdaw on Feb 17, 2011 12:31:31 GMT 1
Have you got the Haynes book "Tuning the A-Series Engine" written by David Vizard?  Loads of good info and tips in there about which way to go.  Worth a read just so you know what options there are before you start on the engineering! |
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