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Piglet's Rebuild Of His Busted Tomei 2.8

Piggaz
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Piggaz
Piggaz

Car is finally booked into Insight on the 19th of April for the ECU, fuel system and sensor wire in plus the tune. Thats the good news. The bad news is that V-cam aint gonna fit with my pistons and ho

Piggaz
Piggaz

Small update.... ITS RUNNING. Fired first go! Smells like burnt dust apparently .

Piggaz
Piggaz

A 9174 would just make the EGP pressure issue worse and in my mind it seems like a bit of a GT RS shit going on. Not that it's horrendously bad (It wouldn't be no twin buttplug pressures), That's NOT

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R32 TT Mentor

R32 TT

Posted
Posted

Hey Paul, as discussed - I used to run 044 in tank, changed to Walbro 460 for e85. Nearly kept up with demand but was on the edge and needed surge tank for track. I considered a number of "big single" fuel pumps - but most American gear I looked at had "duty constraints". ie not to be run at full duty for more than X minutes..

also, mixed results on 'noise' depending on who you talk to. Have sat in a few cars with Aeromotive, Maganflow etc that all you could hear is fuel pump.

this is ok if its a track car only - but to me, even a track car with a quiet pump means you can hear 'other stuff' that you want to hear.. so if you can get performance AND have a quiet pump - then why wouldn't you. Considered speed controlling these and even bought a Fuelab to do just this but did not go ahead based on other factors.

I think there is something to be said for OEM manufacturers. Generally cheaper (replaceable easily), reliable, often quieter, less amps draw (sometimes).

Running e85, I wanted no 'corrosion' so surge tank had to be completely anodised throughout. There is anodising and there is anodising. You want Type 3 Hard anodising done if you get it done locally - this stands up best but it is not 'by default' what you get - you must ask for it.

All lines are Speedflow Series 200 Teflon lined. No corrosion and no smell.

I ended up running a radium surge tank which is well made, properly anodised throughout and holds 2x Walbro 460 e85 pumps. Could have fabbed our own but why reinvent the wheel when this was a good solution. I only switch the second pump on under high load, so it sees very little duty (so it should out last the main one). With e85, there is much less chance of engine damage if you lean it out... and remember a big single pump can still 'slow down' over its life, so the argument there is.... arguable. At least when #2 pump fails you know about it. A big single slowing could catch you out over time.

regarding lift pumps, people have mentioned you can use another Walbro 460 for that - BUT, check out their current draw. They draw big amps even with no load or pressure.. about 10A from memory. If you are at full noise with all three pumps going at 20A + 20A +10A you can be drawing 50A for fuel pumps! (admittedly only at certain times)... with all the other gear we're running and CDI/fans etc... you want to keep it down where you can

I use an e85 rate Pierburg Lift Pump which only draws about 2A and easily keeps the surge topped up.

End result is I have a fuel system that you cannot hear even if you put your ear to it. It is capable of well more than my cars puts down in HP.

Parts are easy to get locally for replacement. All pumps are submersed in fuel - which I also believe keeps them happier in terms of temp and environment. ......and the surge tank is pretty to look at. Bonus. :)

  • Like 4
R32 TT Mentor

R32 TT

Posted
Posted

Sure - its one of the most bling things on my car actually. Normally its all about function and lightweight, but went a bit overboard with a CNC aluminium "shelf" to fit a lithium battery, the relays (hidden behind battery when installed), surge tank and holders for the canisters from the AST Suspension.

The surge tank can take up to 3x Walbro 460 e85.. I run just the two. Pierburg 2A Lift pump in tank.

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  • Like 8
SimonR32 Grand Master

SimonR32

Posted
Posted (edited)

I considered a number of "big single" fuel pumps - but most American gear I looked at had "duty constraints". ie not to be run at full duty for more than X minutes..

also, mixed results on 'noise' depending on who you talk to. Have sat in a few cars with Aeromotive, Maganflow etc that all you could hear is fuel pump.

Hater! :)

I have a Mangafuel Protuner 625 that doesn't need PWM and doesn't have runtime restrictions (I have done hundreds of KM's then done 1000m drag runs without issue) but it's a noisy f**ker. I'm constantly considering the same option as our male model friend here, twin Walbro 460 pumps. I had one in my last green car when they first came out, fantastic pumps and almost silent.

Edited by SimonR32
Piggaz Grand Master

Piggaz

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Posted

That setup is mint, Matty.

As I said on the phone today, i've bought one of those Holley dominator 1800 pumps. By all accounts it should satisfy everything that gets thrown at it.

Bit of an update.

I finally got the car home. Huge issues with injector baskets filling up with this super fine silt. Its small enough to get through the 23 micron filters I have post pumps. The baskets have been cleaned about 6 times, fuel filters twice. The intank pump was flogged so a Walbro 460 went in as a lift pump. Definitely a whole fuel system clean out is in order. I have a few large 6 micron fuel filters coming also.

The modified transfer case has settled the car down alot too. With the GT Pro in the rear set to medium, it was very taily. It feels much more planted, can get on the loud pedal earlier. Win win!

The tune has been relaxed also. Boost controller is turned off, 3 degrees of timing taken out and 6-7% more fuel across the entire map just to make it super safe with this fuel problem. It still went onto make 415rwkw. Did a comp test and its 190 psi across all 6 pots.

The box is great. Definately "woke" it up. The clutch is better than expected also.

28268977-DC49-4393-B984-34533CC3DFAB_zps

What the intank sock looked like.

7A4194A9-20D1-4329-9304-B668EE32112A_zps

Bit of box porn.

  • Like 3
HarrisRacing Proficient

HarrisRacing

Posted
Posted

Dang. You make me think dumping this old wore-out box on the curb and getting a fresher, younger, but more expensive box that may let me thrash it more before complaining.

Wait...we aren't talking about wives?

  • Like 2
Piggaz Grand Master

Piggaz

Posted
  • Author
Posted

http://vid1068.photobucket.com/albums/u457/Ptriffitt/F690A0AE-CCD6-4CEF-A3DD-3D47EE493AFF_zps0mlky3ck.mp4

For shits and giggles I took a video of the warm idle just before the compression test. On E85 you would hardly know it has cams in it.

http://vid1068.photobucket.com/albums/u457/Ptriffitt/D2CDE898-D824-4475-8145-56E87DFD29A6_zpsu2e9b2mn.mp4

A bit of box action. 415 KW, 19 PSI, super relaxed tune.

  • Like 4
Nismo 3.2ish Grand Master

Nismo 3.2ish

Posted
Posted

http://vid1068.photobucket.com/albums/u457/Ptriffitt/F690A0AE-CCD6-4CEF-A3DD-3D47EE493AFF_zps0mlky3ck.mp4

For shits and giggles I took a video of the warm idle just before the compression test. On E85 you would hardly know it has cams in it.

http://vid1068.photobucket.com/albums/u457/Ptriffitt/D2CDE898-D824-4475-8145-56E87DFD29A6_zpsu2e9b2mn.mp4

A bit of box action. 415 KW, 19 PSI, super relaxed tune.

Well what can I say, your passenger said it all. :special:

Love that box , box Mmmmmmmmmmmm

  • Like 2

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