Talon Motorsport
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| posted on 13/8/11 at 03:30 PM |
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inlet manifold steel or ali?
I know that OE inlet manifolds of the past where cast in ali and that new versions are plastic due to their complex shapes and cost. Would it make
much difference if a fabricated inlet manifold was made in mild steel, I know steel would suffer from heat transfer from the head but would the cast
ali or plastic manifolds not have the same problem also? I know that ali seems to be the perfered material but I'm trying to keep the costs
down.
Can any body tell me one way or the other as to the pros and cons of using ali over mild steel?
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big_wasa
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| posted on 13/8/11 at 03:36 PM |
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I think you have about covered it. You will get a little rust on the steel one but you do get some stand off that seems to keep this at bay when used
often.
It does get very warm.
Have you seen the Gbs one that uses the plastic mani' as an injector plate, that should help with heat soak.
Mine
[Edited on 13/8/11 by big_wasa]
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rusty nuts
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| posted on 13/8/11 at 03:49 PM |
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Make your own? I used a piece of 12mm ally plate and some ally tube ,shaped the plate by using an inlet manifold gasket as a template and cut it using
a wood working coping saw with plenty of lube. Then got it welded up , total cost about £30-£35 and a bit of time
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Talon Motorsport
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| posted on 13/8/11 at 04:05 PM |
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I'm looking to be able to provide manifolds for 7's and other low head clearance cars using the ford 2ltr EFI DOHC , EFI Pinto , 1800+2000
Zetec and still use the standard OE hardware such as the throttle body , TPS , MAP etc. Basicly make them as a just add doner parts and bolt straight
on product and still be able to use the OE ECU or megasquirt.
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bi22le
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| posted on 13/8/11 at 04:18 PM |
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I will be making mine very soon. thin walled ali tube with some thick ali sheet for a backing plate. i am then going to weld a pipercross sausage
filter on.
wanted post for materials will be coming soon!!
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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macc man
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| posted on 13/8/11 at 06:43 PM |
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I have made several mild steel/stainless manifolds for bike carbs. All worked fine with no problems. Easier to weld than alloy and cheaper. Might work
ok with injection set up.
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