Project Stumpbroke 576xp Auto Tune

Stumpys Customs · Aug 1, 2012

I got a chance to mess with another Auto tune, this time the biger one. I guess I forgot to take a pic of it before I tore it down. I did get a vid of it stock. You wanna see it???

[video=youtube_share;Nc7F6FweQwI]http://youtu.be/Nc7F6FweQwI[/video]

Stumpys Customs · Aug 1, 2012

I love the looks of these cylinders with the long transfers. Looks kinda racy. :rock:

I need to figure out a way to put two carbs on these.:msp_scared:

Time to get down to business

Nitroman · Aug 1, 2012

I have seen three videos of these autotune saws, and in each one the saw was whining like an LM1500.

Stumpys Customs · Aug 1, 2012

Nitroman said:
I have seen three videos of these autotune saws, and in each one the saw was whining like an LM1500.

They do have a whistle to em

Joe Kidd · Aug 1, 2012

Stumpys Customs said:
They do have a whistle to em

Stumpy, what was your impression in stock form? To me it was kind of a boring cut IMO. Maybe I'm expecting too much.

Stumpys Customs · Aug 1, 2012

Joe Kidd said:
Stumpy, what was your impression in stock form? To me it was kind of a boring cut IMO. Maybe I'm expecting too much.

It wasn't to bad. No wow factor or anything, just a good smooth saw with decent torque.

Stumpys Customs · Aug 1, 2012

Got it all ready to take .050" off of the squishband.

Looks almost like a L head briggs motor with the head off of it.

bryanr2 · Aug 2, 2012

Subscribed.

Stumpys Customs · Aug 2, 2012

Getting ready for some grindin. Not much to work with on the intake.

Stihlman441 · Aug 2, 2012

Subscribed.

Warped5 · Aug 2, 2012

opcorn:

Hedgerow · Aug 2, 2012

Joe Kidd said:
Stumpy, what was your impression in stock form? To me it was kind of a boring cut IMO. Maybe I'm expecting too much.

If you're comparing it to your 395? Yes, expecting too much...:msp_wink:
Once it's been operated on, it should get a little snottier...
:ah:

Got 26.7 on the stock cut time...

blsnelling · Aug 2, 2012

Stumpys Customs said:

Wow, major restriction there!

Hedgerow · Aug 2, 2012

blsnelling said:
Wow, major restriction there!

Not to mention those long transfers add to the case volume a ton...

deye223 · Aug 2, 2012

:Eye:^:Eye:

mdavlee · Aug 2, 2012

They need more blowdown than what they have stock. It should be a good runner with the added compression from cutting the squish band.

jasper89 · Aug 2, 2012

mdavlee said:
They need more blowdown than what they have stock. It should be a good runner with the added compression from cutting the squish band.

I'll just continue to read this as if I know what's really going on.

But willing to find out!

Hedgerow · Aug 2, 2012

mdavlee said:
They need more blowdown than what they have stock. It should be a good runner with the added compression from cutting the squish band.

The squish band looked about perfect on this one... From a cross-sectional area stand point...

Joe Kidd · Aug 2, 2012

Hedgerow said:
If you're comparing it to your 395? Yes, expecting too much...:msp_wink:
Once it's been operated on, it should get a little snottier...
:ah:

Got 26.7 on the stock cut time...

Yes, Perhaps I posted in haste.

Stumpys Customs · Aug 2, 2012

Got er did.

Project Stumpbroke 576xp Auto Tune

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