Alternative Fuels Discussion and Tech on using alternatives such as E85 or Hydrogen or other fuels and/or supplements to Gasoline in Rotary Engines

Pushing 400rwhp on Bosch 044/E85?

Old 01-17-14, 03:08 PM
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Pushing 400rwhp on Bosch 044/E85?

Can it be done? Has anybody done it or is it simply to much vodka for the 044 to flow?

Reason why i prefer the 044 vs walbro 450 is that the walbro dont have threaded inlet/outlet, instead there is a plastic pipe thingy and overall quality feels better on the bosch.

I use a modified stock fuel pump hanger and i prefer to use AN-fittings and stainless braided PTFE hoses all the way from the fuelpump to the fuelrail and it seems impossible with the walbro or can it be modified?
I get the PTFE hoses and AN-fittings for basicly free and the also press the fittings for me and it feels safer for both me and the engine, i am also gonna register the car as a ethanol powered vehicle and the emissons testing guys require a certain standard on the hoses and fuel system.

Dual 044 seems like to much work and also money for 400rwhp e85 13b.
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Old 01-17-14, 04:06 PM
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I think you could if you cranked up the base pressure to 60-70psi. It's a stretch on any single in tank pump at the 400rwhp point though.

I think the real question to ask is, do you expect to exceed 400rwhp? If so, you will need a second pump which will further complicate space constraints. I do still recommend the 044's, as they are some of the most robust and reliable electric pumps on the market.
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Old 01-17-14, 04:21 PM
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i hope for 400 to the wheels... basicly the same setup as you have apart from i have a 13bt and ptrim ball bearing t04s 60-1 instead of rew and gtx35r, i also have a t04z coldside for my turbo if the 60-1 wont make it
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Old 01-17-14, 04:27 PM
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If you aim for anything over 400rwhp, I would recommend a second pump. Both the Walbro and the Bosch 044 are very similar in flow at the higher pressures and I would pick a Bosch every time as I've had and seen several failures with Walbro pumps but not one Bosch pump failure.
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Old 01-17-14, 04:37 PM
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i run a holley dominator pump in tank. supports like 1200hp and cost me less than $350

its a dual pump
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Old 01-17-14, 06:00 PM
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did u manage to fit it inside a stock fc3s tank (modded hanger)?
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Old 01-18-14, 01:51 PM
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Originally Posted by Copeland View Post
I think you could if you cranked up the base pressure to 60-70psi. It's a stretch on any single in tank pump at the 400rwhp point though.

I think the real question to ask is, do you expect to exceed 400rwhp? If so, you will need a second pump which will further complicate space constraints. I do still recommend the 044's, as they are some of the most robust and reliable electric pumps on the market.
Raising the base pressure would only help if your running out of injector. Lowering the base pressure would give you more pump. A 044 should be good for around 500whp on E85. If you want to use just 1 a boost a pump would definitely give you a little more head room.

Howard posted on pumps and E85. Hopefully he chimes in.
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Old 01-18-14, 06:24 PM
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Originally Posted by rx7jocke View Post
did u manage to fit it inside a stock fc3s tank (modded hanger)?
no the tank had to be cut and new pump plate was made. new pickup and all
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Old 01-18-14, 08:12 PM
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Originally Posted by rx7jocke View Post
did u manage to fit it inside a stock fc3s tank (modded hanger)?
I had 400 last time on the dyno and my wastegate wasnt holding so we had to call it quits, i replaced the diaphragm but haven't gotten back since.
I also used to stock fc hanger, plenty of people have. i have a jays fuel sock on the pump as well

I always heard 500 limit on e85 with an 044
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