Intake manifold construction

[Huw Scourfield]

The modern Rover 200 s use a black plastic, so grp should be ok if it will
stand vacuum/pressure.
    Huw
----- Original Message -----
From: Sean W Walsh <Sean.W.Walsh at transport.qld.gov.au>
To: <diy_efi at diy-efi.org>
Sent: 14 April 2000 03:21
Subject: Intake manifold construction


>
>
> Can anyone give me a reason why I shouldn't construct an intake manifold
using
> Glass Reinforced Plastics?
>
> I have an older 4 cyl lancia engine with a dual throat single carby and 4
branch
> manifold. I'm converting this to EFI and want to create a port injection
rampipe
> style intake with a small plenium etc. GRP lends itself to "backyard"
techniques
> and since I have a bit of experience with boat construction I thought I'd
give
> it a go myself rather than getting something fabricated.
>
> What are the problems I'm likely to face : different temperature expansion
rates
> of the inlet manifold (grp) and the head (alloy)?  fatigue from vibration?
high
> temperatures breaking down the epoxy?  I know there are epoxy resins
available
> that are rated to 150 degrees celsius so that should be enough (?) any
other
> suggestions?
>
>
>
>
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