DC2 (R) Fuel Pump Limits?

[ewendc2r]

Again, i've searched but fuel pump is too common a term..

Trying to find out what HP limitations the stock DC2R Fuel Pump has? I can honestly say I know nothing about them (i.e. intake, external, sard / bosch / walbro etc) ..

I understand there are high pressure / low pressure systems? Or something? lol..

You can see I need help.

[tinkerbell]

upgrade to a walbro 255.

everyone i know who has done this has not had a problem.

[ewendc2r]

yeah going to have to (for long run) but was trying to save a couple of hund for the time being if I'm only running 7-9 psi if the stock puimp supported it.. I think its close but I agree with you sort of insurance..

Has anyone else setup a surge tank or seen a good DIY guide? I am assuming we don't have baffled fuel tanks.. ?

[DC2RKID]

we should have baffled tanks man...not many tanks these days aint

[ewendc2r]

My experience with most Japanese / Domestic cars is to the contrary - Has anyone had problems with starvation under high extended lateral g corner? I mean, we normally wouldn't be on the track with much less than half a tank, so usually not a concern.. I just don't want to run the risk of leaning out and going boom..

I guess this will sort it: Do the guys with race cars here, Benson etc, use a surge tank?

[JORDS]

Benny has upgraded the pump, no surge. I think Dave has a surge tank set up.

[tinkerbell]

this is my surge tank setup, it has a walbro inside and gets filled from the OEM fuel pump...

it is custom made from stainless steel and cost $400

(pic is from my old B16A prelude engine bay)

[tinkerbell]

I guess this will sort it: Do the guys with race cars here, Benson etc, use a surge tank?

no, most racers use half-tank strategy...

[DLO01]

yeah going to have to (for long run) but was trying to save a couple of hund for the time being if I'm only running 7-9 psi if the stock puimp supported it.. I think its close but I agree with you sort of insurance..

With boost a stock pump will support it, BUT not for 'prolonged' time. It will run out of puff.

Saving a couple of hundred $ now may end up costing you a couple of thousand $ down the track.

[ewendc2r]

yep -- not what i'm looking to do, i would've only done it if within the specs of the pump. I'll get one shortly.

Also replacing the timing belt, there is a kit with tensioner pulley / spring / belt for $100us so might go down that route, all oem parts..


Hey TB -- Was kinda hoping to do something like that but in-tank.. thanks for the photo, gives me a good idea.

[WhiteDC2]

I don't run a surge tank, just a Walbro - they're under $200. I'm upgrading to Bosch soon as they tolerate E85 better.

If you take the fuel pump cover off you'll get a good view inside the tank and see that there is baffling around the pump pick up. I've never had any fuel surge or pressure issues.

[DLO01]

If you take the fuel pump cover off you'll get a good view inside the tank and see that there is baffling around the pump pick up. I've never had any fuel surge or pressure issues.

^^^ Exactly.

[fatboyz39]

I don't run a surge tank, just a Walbro - they're under $200. I'm upgrading to Bosch soon as they tolerate E85 better.

If you take the fuel pump cover off you'll get a good view inside the tank and see that there is baffling around the pump pick up. I've never had any fuel surge or pressure issues.

Which Bosch pump Troy?

[ewendc2r]

Thanks for that info -- Exactly what I wanted without having to drop the bloody tank firstly.. So looks like no need for the surge tank (at least for now).

WRT Bosch vs Walbro --- Is the Bosch better than the Walbro or is it a compromise you are making to use e85? Walbro seem to be the mainstream upgrade route..

Hey -- Just realised. Do I have to get my car engineered once I put the SC kit on?

[WhiteDC2]

Which Bosch pump Troy?

I'm looking at an 023 in-tank pump (P/N 0580254023). Bosch, like Walbro, don't warrant the pump for use in ethanol based fuels, but it's capable at delivering 168 LPH at 5 Bar. I don't think my walbro is very happy at 90 PSI and I don't want it's performance to degrade or fail altogether on the track.

Thanks for that info -- Exactly what I wanted without having to drop the bloody tank firstly.. So looks like no need for the surge tank (at least for now).

WRT Bosch vs Walbro --- Is the Bosch better than the Walbro or is it a compromise you are making to use e85? Walbro seem to be the mainstream upgrade route..

Hey -- Just realised. Do I have to get my car engineered once I put the SC kit on?

Tank access is from within the cabin, under the rear seat.

Bosch are a better pump - they supply more fuel at higher pressures, but do cost more. That said, I' ran my Walbro for a year dong high kilometers on regular petrol and pressure before doing a SS season running E85 @ 90 PSI. It's reasonably priced and a straight swap. Definitely good value.

Most major modifications, like forced induction, require engineering to be totally legal. Check with your state traffic authority as requirements vary.