807/TS DD, Auto-X, Hill-Climb build.

[GavinT]

Are they using 6 mm valves in 4-valve or 2-valve "Tuner" engines?
Haven't researched this but in general, I'd expect commonly available 4-valve engines to use smaller head diameters as they obviously need to fit side by side in the combustion chamber.

[Richard48Y]

I am still researching but it seems they are in both.
I am being told that 6mm stems now offer the greatest variety of possible valves for the 807/TS head.

NASCAR are a roundy-round race series using American V8 engines.
I think the intake valves are 2.02" but they may be larger.
They may also be Titanium if the rules allow.

I just tripped across Mecaparts offering new lifters with DLC face treatment, at "Only" around $500 USD. 
But this does encourage me to continue looking into practical lifter face treatments.

[Richard48Y]

Pretty frustrated with trying to search Mecaparts.
I have sent them a web translated email asking if they have an alternate site in English (Doubtful) or maybe a list of parts suitable for Europa use.
I was never able to find any reduced stem diameter valves there to help with my Beehive spring goal.
They may well have them, I just cannot locate them across the language barrier. 

[jbcollier]

Apple now has a translation option built in.  Before that I used google-translate.  Both work well enough for you to figure out what is on offer.  I did two or three orders from them when I was building my crossflow, went just fine though I can't rmember quite how I did it.  I believe I made up a list of parts and enquired by email.  Then I sent them my credit card details.  All pretty straight forward.

You can't expect them to make up a list of parts that might work in a Europa.  Not when their business, 99% of it, is performance Renaults.  We're just lucky they are making so many parts we can use.

[Richard48Y]

I did specifically ask which of their aluminum oil pans might work.
I tried translating the item terms I was looking for to match terms on their site too.
No luck there either.
I will make another run at it next week after they respond to what I sent last night.
And the dollar is back in the basement again too. 

[Chuck Nukem]

I am still researching but it seems they are in both.
I am being told that 6mm stems now offer the greatest variety of possible valves for the 807/TS head.

NASCAR are a roundy-round race series using American V8 engines.
I think the intake valves are 2.02" but they may be larger.
They may also be Titanium if the rules allow.

I just tripped across Mecaparts offering new lifters with DLC face treatment, at "Only" around $500 USD. 
But this does encourage me to continue looking into practical lifter face treatments.

I have a source for DLC coating in California if you need someone to do it.

[jbcollier]

Banks has an aluminium oil pan that works well -- though I had to powder coat mine on the inside to stop some porous areas weeping oil.

[Richard48Y]

Cam, Valves, Beehive Springs, are sending me in circles.
Each vendor wants specs from the others.

This is the cam I got back from the grinder.
Not sure I can use it, .470" lift at the valve?
The cam grinder says it is a Gordini spec.?
Cam grinder does not have any suggestions for Beehive springs, instead he suggest much stiffer springs than stock.

I need to find more of the original specifications as a starting point.
Some I can just measure, others I need references for.

[Richard48Y]

Got my head back from the rebuild shop, HBR in Las Vegas.
Pics at my main thread, https://www.lotuseuropa.org/LotusForum/index.php?topic=4056.msg67996#msg67996