John's EZ36R H6 818R Build

[Frank818]

Nice stuff. Are those Group N mounts rubber or polyU? And are they really stiff or more on the smooth side, absorbing most of the vibrations?
Or maybe it's just the H6 that is designed to have small primary and secondary imbalances. Either way that is great it runs super smooth.

[Hobby Racer]

Nice stuff. Are those Group N mounts rubber or polyU? And are they really stiff or more on the smooth side, absorbing most of the vibrations?
Or maybe it's just the H6 that is designed to have small primary and secondary imbalances. Either way that is great it runs super smooth.

They are Group N mounts so not really stiff. The H6 has no primary or secondary imbalance and there is only a small tertiary imbalance, plus I balanced the internals to ~ 0.5 gram total bob weight!

[Hobby Racer]

Well everything is back and running with the AWIC and smaller 90 mm supercharger pulley. The bad news is can not find anyone to tune the engine and definitely not before my trip to VIR this month. So I think I'm just going to run a very conservative tune and maybe run 100 octane race gas to stave off any possible knock.

Until I can get it on a dyno and know where the knock threshold is I think it is best to error on the side of caution. This is such a strange and unique setup there is no base map to go from, just have to wing it

[J R Jones]

John,
Does your ignition and OX sensors give you A:F ratios to identify lean mixture? Tune a bit fat if you are concerned? I assume your max advanced timing is fixed?

[Frank818]

This is such a strange and unique setup there is no base map to go from, just have to wing it

Why can't you use your 110mm pulley map and guesstimate from there, then drive it a bit and see what happens?
That's what I did when I changed displacement, CR, injectors and head, all at once. Worked pretty good on first start, but you gotta know your ECU software.

[Hobby Racer]

Why can't you use your 110mm pulley map and guesstimate from there, then drive it a bit and see what happens?
That's what I did when I changed displacement, CR, injectors and head, all at once. Worked pretty good on first start, but you gotta know your ECU software.

That's what I've done, but still no substitute from real dyno testing. Ignition timing is everything on a forced induction motor. I'm just going to be real conservative until I can get it on a dyno.

[Frank818]

That's what I've done, but still no substitute from real dyno testing. Ignition timing is everything on a forced induction motor. I'm just going to be real conservative until I can get it on a dyno.

Oops for some weird reason I was thinking you were referring more to A/F tuning. A lot easier to do, but still not peanuts. loll I guess there aren't a lot of supercharged 3.6 on the web, let alone those who discuss their timing map, I understand how difficult it would be to have a start and you probably have nothing at all to refer to.

Let's hope you get it to the dyno sooner than later and yes, very conservative is the best to do, as 1 lousy degree too many could cost all internals.