WaveDemon's 66e SJ Conversion - new ride report.

[superramjet]

nice to see this coming along. I've always wondered what that motor would run like with a b-pipe. Good work.

 

[tom21]

its been a fun build so far I hope the power is there!!!! :headbang::headbang:

 

[WaveDemon]

the exhaust manifold is made but needs a water jacket still. working out a template for the sheetmetal waterjacket is tough!. found out the bed plate is in the way of the stock carbs so that went back on the mill today.

good news is the motor with complete exhaust (minus waterjacket on manifold) bolted bolted in and fits.:Banane57:

manifold bolted up.

working on water jacket template

 

[shawn_NJ]

This is gonna be ********ing sick when its done.

 

[WaveDemon]

This is gonna be ********ing sick when its done.

I hope so. since we've worked out all the hard parts I wonder how interested people would be in buying a more polished version of these parts... :spam:

 

[Boris]

You think that the head pipe will need extra support ?

That manifold looks does solid but vibrations are a biotch.

 

[blaster800]

the exhaust manifold is made but needs a water jacket still. working out a template for the sheetmetal waterjacket is tough!. found out the bed plate is in the way of the stock carbs so that went back on the mill today.

good news is the motor with complete exhaust (minus waterjacket on manifold) bolted bolted in and fits.:Banane57:

manifold bolted up.

working on water jacket template

Did you use prebent stainless tubing and then cut and modify to fit ?

 

[WaveDemon]

Did you use prebent stainless tubing and then cut and modify to fit ?

yes, it was part of a turbo kit on ebay.

 

[blaster800]

what diameter !

 

[WaveDemon]

what diameter !

the pipe is 2" ID which = the 50mm exhaust port and my ported head pipe.

 

[Andrew1289]

Great project! I'm not trying to thread jack, this should probably be a very short answer. Why does the exhaust even need water jackets? Is it because there is no air passing by it like in other engine applications to cool it down?

 

[WaveDemon]

Great project! I'm not trying to thread jack, this should probably be a very short answer. Why does the exhaust even need water jackets? Is it because there is no air passing by it like in other engine applications to cool it down?

the motor gets it's cooling water from the exhaust manifold.

 

[#ZERO]

You're going to build a water jacket box around that exhaust manifold, right?

 

[WaveDemon]

You're going to build a water jacket box around that exhaust manifold, right?

yep, I posted a pic of me mocking it up.

 

[#ZERO]

It looks like you're using aluminum foil? :scratchchin:

There's a sheet of .060" wall stainless at the shop that would work better.

 

[ATS_Scott]

Why a waterjacket? Why not just drill/tap your flange for 2 npt hose barbs (to feed the head) and be done?

 

[Matt_E]

Because the manifold needs to be cooled.

 

[#ZERO]

That thin wall stainless tube will glow cherry red if it's not cooled by water.

 

[WaveDemon]

It looks like you're using aluminum foil? :scratchchin:

There's a sheet of .060" wall stainless at the shop that would work better.

I am using aluminum foil to work out the pattern. I bought stainless sheet for the final.

 

[ATS_Scott]

That thin wall stainless tube will glow cherry red if it's not cooled by water.

yeah good point ;-) so how hot is the exhaust gas on a 2 stroke anyway? for some reason I never think of it being that hot, like under 5-600f. My car see's 1200-1400f but it's turbocharged and angry.

Sorry for the O.T.