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Intake & Exhaust Valves


swift

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Is there an option in the US for these high $ parts?

Actually... that reminds me.. i've got to send off an exhaust valve to Atomic Speedware....I'll get on that here right away.

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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Sending the Valve off today... Atomic should have it in a few days and then SI Valves will be getting it and giving us a quote on new stainless exhaust valves... The intakes are fairly easy to come by from lotus though.

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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They are sodium filled... SI has been making performance valves for many years and they know about the sodium filling. Apparently their material is superrior to the sodium for heat dissapation. I've had this discussion before and after talking to Nick Arias III at Atomic (who's family has been making pistons and race engines for 2 or 3 generations) the SI valves will be as good or better than the stock Lotus version.

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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The dimensions are why i sent them to SI Valves... They have the proper measuring equipment to get exact specs... I could have measured the stem length and diameter and valve diameter but then there's the throat and i'm unsure where to measure that.

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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Garry Kemp actually does head conversions for water cooled valve guides as well, if you're going for silly power.

i'm going to get mine done when funds permit.

Wow... that's intense... I've never gone to that extreme building an engine before. I just go with cast guides -- longer durability than bronze, and stainless, polished valves. Of course, a 3 angle valve job and a lot of porting and gasket matching a flow testing. Then there's the pistons... polishing etc... polish cylinder dome... but man.. liquid cooled valve guides... wow! Never even thought of that! Very good idea though for durability.. how is it done?

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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SO no one has used anything but the OEM valves? At $160 ea I will have to take the hit.

Last time I bought valves for my Esprit, the sodium filled exhaust valves wer $89ea, and the intake valves wer $29.

From Lotus parts places like JAE...

Travis

Vulcan Grey 89SE

My Lotus Photo and Projects Album

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