Author Topic: Another Gasser build  (Read 1917 times)

Offline slow67

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Reply #15 on: February 27, 2016, 01:50:54 PM
I can't tell because of the glare, how many lb/min is the he561 good to? I knew the he451 was good to 80lb/min.



Offline 65fpvmustang

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Reply #16 on: February 27, 2016, 05:33:39 PM
there in the second picture no glare were you want to look
100lb to 120lbs at a 3.0 pressure ratio



Offline Rx7man

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Reply #17 on: February 27, 2016, 06:32:14 PM
I think if you had that big a turbo on a rotary, you'd benefit from trimming the outside of the compressor wheel a bit... faster spoolup at the expense of peak pressure ratio... Lets face it.. No gasser will take 5:1 PR without being built of unobtanium.

The HX5A looks like it would make a good Big block turbo... Massive air flow but not huge pressure ratio

'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM


Offline slow67

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Reply #18 on: February 27, 2016, 07:00:02 PM
Thanks! I was looking at the wrong map. ~115lb/min is stout! This turbo looks like a great match (on the compressor side) for a typical small block.

I guess the jury is still out on the turbine side though (that turbine is tiny compared to many modern turbos capable of similar amounts of airflow). I can't seem to find any turbine flow maps on Holsets.

My math says at 10psi (where I will start boost-wise), the wastegate will be open by 4,000 rpm.



Offline 65fpvmustang

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Reply #19 on: February 27, 2016, 11:25:33 PM
A gasser built just like diesel or aircraft 4340 steel crank and rods.
With high octane fuel will take the boost.
If you think about it the diesels are the hardest combustion to handle there a detonation engine.
the fastest 2.3 lima i know of runs over 64 psi boost.
Diesel engine will always be king of boost.
In 1909 Dr. Buchi was running 71psig intake manifold pressure on a diesel.



Offline 65fpvmustang

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Reply #20 on: February 27, 2016, 11:50:27 PM
Holset turbine flow very well. On my 2.3 with the he351ve running 1to1 is no problem on a log manifold. the he351 has a 60mm comp inducer and 60mm turbine exducer. so your he561 will have no problem doing the same. I'm at least 2 months away from test drive on my big vgt.

My biggest hurdle was getting my home made manifold to take the heat and weight.
I add flex joints to handle expansion and built it all from 304 ss with extra straps to hold the turbos weight.
So far this has been holding up at 30psig boost. my fuel pressure sensor limits me from running higher boost. but i also don't think my stock rods and crank can take much more.



Offline Rx7man

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Reply #21 on: February 28, 2016, 09:44:29 AM
I was referring to the limitation of the fuel because of preignition more than the strength of the internals.  Most boost I've seen was about 45 PSI on race gas.. In a 1.3L rotary it worked out to 875 RWHP.

That manifold was made out of stainless steel steam tubing, which is nice, thick stuff designed for extreme applications

'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM


Offline 65fpvmustang

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Reply #22 on: February 28, 2016, 10:21:21 AM
e85 builds are pushing over 60psi
next time you have good internet speed check this one out blows my mind.
64psi boost 1233hp 2.0L vw golf all wheel drive.



Offline slow67

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Reply #23 on: February 28, 2016, 01:17:54 PM
Here ya go. Stock GM block, crank, rods, pistons, and heads (although ported).  40lbs of boost on methanol. I think 2800lbs and a single 88mm. 




Offline 65fpvmustang

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Reply #24 on: February 28, 2016, 01:29:11 PM
OK what's your 4.8 going in?



Offline slow67

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Reply #25 on: February 28, 2016, 01:51:33 PM
Its already going (in N/A form).

1981 Chevy C10 Longbed, drive by wire (stock GM PCM), 4L80E (billet input shaft, billet forward hub), 2800 stall (10" Nissan core) triple disk.

Cold A/C, and Flex fuel also.



Offline 65fpvmustang

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Reply #26 on: February 28, 2016, 07:20:03 PM
got my actuator mounted he351ve on he5??ve
had to flip arm down to get everything to clear.
Welded extension on turbo for actuator to mount to



Offline slow67

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Reply #27 on: February 28, 2016, 09:35:56 PM
Nice!



Offline 65fpvmustang

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Reply #28 on: February 29, 2016, 12:45:47 PM
does your big vgt have coolant ran through your actuator like the he351ve?
My he561 came with freeze plugs where coolant would run.



Offline slow67

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Reply #29 on: February 29, 2016, 01:28:48 PM
The HE451 has plugs and sepwrate coolant paths. I will let you know when the HE561 gets here, it should arrive by Friday.