Elise Alloy Intake Manifold

[chucklebutty]

Hello all!!. I have my eye on a 1998 VVC alloy inlet manifold on The Bay.

My non-VVC 1998 S1 still has a plastic version, with 52mm Throttle thingy, Hurricane and a de-cat Janspeed mild steel exhaust.

Is it worth replacing the inlet manifold? Is it a straightforward job? Help appreciated.

[lamb jiblets]

Morning
General thought is it's not worth doing unless you are having/had the head done, there is a discrepancy between the ally plenum and the head ports so you wold need them faired to each other. I had one fitted when I had my head ported and the result with a TIG was 142hp on STD cams and with cat fitted.

[DVandrews]

chucklebutty said:

Hello all!!. I have my eye on a 1998 VVC alloy inlet manifold on The Bay.

My non-VVC 1998 S1 still has a plastic version, with 52mm Throttle thingy, Hurricane and a de-cat Janspeed mild steel exhaust.

Is it worth replacing the inlet manifold? Is it a straightforward job? Help appreciated.

Indeed, don't waste your money, it will just loose you some torque and will not improve your power output. It is an appalling fit to the inlet ports on a stock head, the inlet ports are around 34mm, the runners on the VVC manifold are closer to 38mm, this causes a large step at the manifold face, not good for power.

Just deflash the standard manifold where the seam is in the runner.

Dave

[chucklebutty]

Thank you so much chaps. I'll deflash as recommended.

[Flying Tommy]

Em, what is deflash? Is that like making sure the manifold channel and head channel connect as fluently as possible? Put otherwise: is it the same as flowing the manifolds and head?

[Flying Tommy]

Anyone can lighten the term deflash please?

[TIPPER]

Flash is excess material left over from the moulding process. If you look inside your manifold you'll see material that obviously isn't part of the design. Its left there because removal would add cost to the manufacturing process and as its inside and the end user won't see it.