2016 turbo overheating when in boost. Headshim?

[174mcx]

I had chuck build a few motors, likely he couldn't get low compression pistons when this one was being built so switched for the shim. If you want my opinion, run 50% premium and 50% c111 or c12 and turn the boost up to 15-20lbs and hang on. Do you know what you have for clutching? weight model, actual weight, primary spring, secondary helix, secondary spring and wound rate?

 

[zx4ever]

a friend of mine built that sled originally it has headshim only if know one else messed with it. It used to work really really good. PM me if you like.

That’s awesome I figured someone on here would recognize it. Thanks I will send you a pm with a few questions. Lund this sled does have a afr gauge and I watch it frequently. I have been running a nytro turbo for 10 years before I bought this one. A mod turbo needs a afr gauge.

 

[zx4ever]

I had chuck build a few motors, likely he couldn't get low compression pistons when this one was being built so switched for the shim. If you want my opinion, run 50% premium and 50% c111 or c12 and turn the boost up to 15-20lbs and hang on. Do you know what you have for clutching? weight model, actual weight, primary spring, secondary helix, secondary spring and wound rate?

This thing came clutched almost identical to my nytro turbo. Except heavier weights. Its boost it clutching 47 deg helix with purple spring at 1-0 and 72 gram adjustable daltons with 14.5 rollers and blue brown blue spring.

 

[174mcx]

Turn the boost up till it hits the rev limiter, then back off 1psi. Add weight if you want to go faster. That little turbo isn't going to want to make more then probably 16psi. I would say your running near the limit at 14psi with 91 octane. My theory has always been, it only costs an extra $40 a day to run 50% race, that motors worth about $4k if you let it detonate, and usually a helicopter ride for another $1k.

 

[tmo1620]

Turn the boost up till it hits the rev limiter, then back off 1psi. Add weight if you want to go faster. That little turbo isn't going to want to make more then probably 16psi. I would say your running near the limit at 14psi with 91 octane. My theory has always been, it only costs an extra $40 a day to run 50% race, that motors worth about $4k if you let it detonate, and usually a helicopter ride for another $1k.

Ya I never understood the wanting to run pump gas on a machine with boost. $hit gets expensive when she blows and due to detonation to save very little money seems silly. My price on av gas is 15-20 cents more a litre. And 30 mins of my time to run to the airport


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[zx4ever]

Turn the boost up till it hits the rev limiter, then back off 1psi. Add weight if you want to go faster. That little turbo isn't going to want to make more then probably 16psi. I would say your running near the limit at 14psi with 91 octane. My theory has always been, it only costs an extra $40 a day to run 50% race, that motors worth about $4k if you let it detonate, and usually a helicopter ride for another $1k.

Truely I can’t see myself going past 15psi anyway so no plans to upsize the turbo. I may add a little av gas in if I really wanted to crank it up but my old Nytro I ran 91 octane at 14 lbs at elevation all the time. So I’m pretty sure it will be fine especially with water to air intercooler keeping charge temps Ice cold. But good info to have thanks.

 

[zx4ever]

Well a little update thanks 06yamahaapex this sled only has a head shim in it the rest is stock internals. From the research I have done it has the 2 half moons on the case so it should be the old good rods not the newer soft rods. I’m thinking since it has run 4000 km so far at 15 psi it should be good. Also I would like to thank winternutz podcast for the map for this sled, it now has some real nice afr numbers as it should