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M35 Fuel System Upgrade

scotty nm35
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scotty nm35 Grand Master

scotty nm35

Posted
Posted

I have nearly finished the fuel system in preparation for the GTX3071 install. Twin 6an lines, one from each 255 walbro, one line to each rail and one 6an return from the reg. The one way valves will stop the fuel running back up the other rail if one of the pumps fail. The goal was to finally fit an ethanol tolerant fuel system and also improve the flow to the 1000cc injectors. Hopefully I wont need to upgrade the fuel side again, even if I get around to building the 3.5L.

Thanks Aaron for the help. :thumbsup:

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https://www.sau.com.au/forums/topic/364527-m35-fuel-system-upgrade/
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Sunkist Grand Master

Sunkist

Posted
Posted

the rails arent replaced. they are standard

The lines going to the rails and in between them proved to be way to small if you ever wanted to upgrade the fuel system. so these were cut off the rails with new goodies fitted/welded to them.

Im running ethanol on the stock fuel system, with just an upgraded walbro pump and 610cc injectors.

Scott found himseld maxing the fuel pump when he went to the 1000cc injectors..hence the fuel revamp.

personally i think he's nuts. lol

Sunkist Grand Master

Sunkist

Posted
Posted

Or tequila :( So that's why you exist!

Now I see why Scotty's upgrading the fuel system, making it flow enough tequila to get some POWAH!

that and i think the GTX will definitely be needing it on E85

bigkevracer Grand Master

bigkevracer

Posted
Posted

Are there plans to do a kit for others looking at upgrading to a GTX? They're pretty cheap out of the US at the moment, and I'm thinking with a kit it'll probably work out cheaper than a high flow.

Sunkist Grand Master

Sunkist

Posted
Posted

Are there plans to do a kit for others looking at upgrading to a GTX? They're pretty cheap out of the US at the moment, and I'm thinking with a kit it'll probably work out cheaper than a high flow.

lol i think i heard him at least 20-10000000000 times yesterday say. "f**k im never doing this again" lol

and it would be a pretty pricey kit lol

ironpaw Veteran

ironpaw

Posted
Posted

Are there plans to do a kit for others looking at upgrading to a GTX? They're pretty cheap out of the US at the moment, and I'm thinking with a kit it'll probably work out cheaper than a high flow.

Huh?

r u serious?

With the amount of stuff that needs to be done to make it all work...I can't possibly see how it'll be cheaper then a high flow...

Sunkist Grand Master

Sunkist

Posted
Posted

Huh?

r u serious?

With the amount of stuff that needs to be done to make it all work...I can't possibly see how it'll be cheaper then a high flow...

it is cheaper than a high flow.

if you have a stock car, your doing a new exhaust and suction pipe anyway.

its really not much more than you think Jethro.

Its expensive for scott because he's done his highflow.

and its way more expensive for you because you pretty much got his setup for near to nothing lol

bigkevracer Grand Master

bigkevracer

Posted
Posted

It seemed like supporting mods were the same, fuel pump, injectors, ECU, suction pipe, etc. And I've seen GTX's going for US$1300. I've been quoted three different options for the turbo, the two highflow options were around $1800 and $2300.

Will the gearbox even cope with more than 300awkw on e85?

ironpaw Veteran

ironpaw

Posted
Posted (edited)

It seemed like supporting mods were the same, fuel pump, injectors, ECU, suction pipe, etc. And I've seen GTX's going for US$1300. I've been quoted three different options for the turbo, the two highflow options were around $1800 and $2300.

Will the gearbox even cope with more than 300awkw on e85?

Yeah the GTX's go for about 1.5k but it won't bolt straight on. Scotty's using a TiAL housing with external wastgate...

Those are pretty expensive hi flows...I think a few members here had them done between 1k-1.5k.

Also unless someone figures out this stupid throttle restriction thing you won't hit boost till like 5k+ rpm....LOL

and yeah like you said, more work to the GB...not sure if a shift kit will handle more then 300awkw...

Edited by ironpaw
iamhe77 Grand Master

iamhe77

Posted
Posted

it is cheaper than a high flow.

No, it's not.

But it will wield greater results.

It seemed like supporting mods were the same, fuel pump, injectors, ECU, suction pipe, etc. And I've seen GTX's going for US$1300. I've been quoted three different options for the turbo, the two highflow options were around $1800 and $2300.

If you want to go with a highflow, maybe talk to Stao at Hypergear.

If you don't need a ball bearing core, he can high flow the stock M35 turbo for around $800.

Nice work too!

(just exercise caution as he really pushes for a GT3076 core!!)

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