LS1 and L76

[Rebel1]

Mike, why would you want to run two walbro pumps?. Why not the Bosch 040 which is advertised as below? :

In tank 600hp fuel pump 040 model

This pump is a Bosch K-Jetronic pump which is capable of pumping efficiently at high fuel pressures and suits high boost , high flow applications. It has a built in strainer on the base of the pump and can usually be adapted to suit most in-tank applications. It is commonly called an Audi Motorsport pump by people in the trade. It has similar physical dimensions to the external Bosch motorsport pumps but is a little shorter.This unit is the In-Tank version of the Bosch 044 Motorsport Pump.

[Aussie Mike]

I've looked at them as well. That's definitely an alternative to the twin pump setup and probably easier to plumb in.

Cheers

Michael

[400TT]

We also used Bosch 044 in my brothers Harrison with turbo Lexus. Cheap and effective. But as Mike points out...noisy. Not a big problem depending on how noisy your exhaust is.

[sideshow]

value for money the holden pump sender assembly for gen3 is cheapest
and easiest

pump sits in a tiny swirl pot
pump pumps fuel to engine
just after outlet of pump assembly u fit a t piece and run the fuel hose
back into the fuel pump assembly
where inside the unit it has the reg and returns the fuel back into the tiny swirl pot
very nice and neat conversion


another prob with new ls2 and l76 is u dont get some plugs for the ecu and gbox and o2 sensors and air flow meter

most of these are on the body loom which costs alot from holden

so im starting to bring in the missing parts and making the missing looms

[Plums]

Rebel1, that's 330kW's at the wheels for an aspirated motor. I only ever quote figures at the wheels.

The std 3/8 lines that these things run are plenty big enough, particularly when there's 60psi of fuel pressure behind it. Realistically, you can easily run over 350 rwkW's with the std 3/8 lines (that's well over 400 kW's at the flywheel).
Be very careful about going to larger fuel lines unless you are running big pumps. The extra volume in the lines can actually reduce the efficiency and cause pressure drops, (not good). The extra volume of fuel weighs more and under heavy acceleration this extra weight, puts more load on the pump. It's a catch 22 really, because under heavy acceleration you require more fuel, but you are actually trying to force the fuel back down the lines due to your acceleration g loads.

With a std pump set-up, stick to the std size lines....

[Aussie Mike]

The only problem with it is it can be a bit tall to fit in some fuel tanks. The CR runs a VN commodore tank which is quite flat. I made an external swirl pot tank assembly that the whole LS1 pump setup slides into. There's a bolt up flange that seals it into the top with a rubber O ring. It's then fed from the intank pump and also returns to the main tank.

I decided not to use it in favour of the Bosch 044 and Boxhead has it now. It probably would have ben a much quieter option in hindsight. David might have a picture of it somewhere, unfortunately I cant find my pics of it.

Cheers

[Rebel1]

Originally Posted by sideshow

another prob with new ls2 and l76 is u dont get some plugs for the ecu and gbox and o2 sensors and air flow meter

most of these are on the body loom which costs alot from holden

so im starting to bring in the missing parts and making the missing looms

Good on ya sideshow.

Give me a hoy when you want my harness.

[Rebel1]

Originally Posted by Plums

Rebel1, that's 330kW's at the wheels for an aspirated motor. I only ever quote figures at the wheels.

The std 3/8 lines that these things run are plenty big enough, particularly when there's 60psi of fuel pressure behind it. Realistically, you can easily run over 350 rwkW's with the std 3/8 lines (that's well over 400 kW's at the flywheel).
Be very careful about going to larger fuel lines unless you are running big pumps. The extra volume in the lines can actually reduce the efficiency and cause pressure drops, (not good). The extra volume of fuel weighs more and under heavy acceleration this extra weight, puts more load on the pump. It's a catch 22 really, because under heavy acceleration you require more fuel, but you are actually trying to force the fuel back down the lines due to your acceleration g loads.

With a std pump set-up, stick to the std size lines....

Got ya Plums....standard pipes it is. Thanks heaps.

[Rebel1]

Originally Posted by Aussie Mike

The only problem with it is it can be a bit tall to fit in some fuel tanks. The CR runs a VN commodore tank which is quite flat. I made an external swirl pot tank assembly that the whole LS1 pump setup slides into. There's a bolt up flange that seals it into the top with a rubber O ring. It's then fed from the intank pump and also returns to the main tank.

I decided not to use it in favour of the Bosch 044 and Boxhead has it now. It probably would have ben a much quieter option in hindsight. David might have a picture of it somewhere, unfortunately I cant find my pics of it.

Cheers

Thanks Mike, a pic would be good. Some idea of size would be great if some1 has them.

[stephen low]

Interesting to read the Bosch 044 is noisy, suppose I will find out once I eventually fire mine up.

I did try to find an in tank pump to fit the GF fuel tank that came with my kit, but the tank is too squat. Bought an AU tank from Ebay that didn't work but at least I sold the pump/surge pot for more than I bought the whole shebang for. Anyone want a plastic tank by the way??

Like Mike, long term would be a replacement ali tank with surge and inbuilt pump arrangements. Will have to struggle on until then.

Cheers

[Rebel1]

Anybody have the dimensions of the Holden intank bucket/pump thingy?.
Are there different versions of the same thing?.

Cheers

[boxhead]

I have got one sitting in a box at home, its yours if you want it.
It is new, it is one that Holden sent as a replacement when the early ones where being replaced under a recall.
If you dont want the whole thing then I can just measure it up and post the dimensions here for you.

[Rebel1]

That would be just fabulous. Thanks a heap.

I'm not real sure that I'd use it as I am trying to use my existing Stainless tank and having it modified for Fuel Injection. Depth of the tank may be a problem. But I don't want to toss this stainless tank if at all possible.

I'll send my address to you by PM. Any costs sending it would be gladly paid.

Thanks again

[WKB]

Rebel,
For ease of fitting, the pump from a BA falcon would be better pump to use than the one from a late model commodore. The falcon pump uses 5 or 6 bolts to hold it position where the commodore uses a circlip. The fuel tank from the harrison now uses a falcon pump. The first few tanks that had the late model pumps that were made used a late model fuel pump from commodores(which I have) and then they were changed to the ford pumps.
The commodore sedan pump that I fitted I had to shorten the locating tubes by about 50mm to fit it into the tank. If you are going to fit a holden pump the VY ute pumps have shorter locating tubes than the sedans.

Warren

[Rebel1]

All good info fellas.

The tank that I currently have is 200mm (8") deep.

Warren, can you remember how deep the harrison tank is?.

Cheers
Les

[PCC]

Considering Ford gear Les?????

Swap and change, swap and change

Good job the Cold War is finished - You would be one of those double spy types

[Rebel1]

Anything uncle Pete which saves rework later.

Actually, I much prefer the auto's from the ole country. The AC of course, The healy, MG, Aston martin, Jag, etc., to name just a few.

Actually a group of us were discussing this the other day wherein we wondered how in hell the ole country manufacturers let go of such a diverse and wonderful auto industry.

There was a heap of cars come outta there that had personality.

[PCC]

Cost driven mate - as per most things in life

Too much time making a quality product that the general public could not afford or simply thought too dear.

As per a saying from Yorkshire - You don't get owt for nowt

After watching Top Gear last night (another quality GB Program), which has me rolling in laughter (A Renault Espace home made soft top going through a baboon enclosure) i again fell in love with the Koenigsegg (how is that for spelling!), but with a price tag of $750,000 Aus it is simply out of most men's league.

An Aston is another love of mine (once British), but again simply priced too high.

The Cobra (Replica) is the closest you get to fun for a reasonable price (again to many it is out of their reach).

I've thought about trading the Cobra in and buying an MG or Healy, but they simply do not have the squirt of a Cobra.

What do you buy for your money - If I knew I'd be out there buying one.

For now, the Cobra is good and you feel more connected when knowing it is individually made and quality time is spent tinkering

[boxhead]

The way mine is set up Les is that I am using a standard pump to draw the fuel from the tank and Aussie Mike made a swirl pot that the commodore pump (the type I have) fits inside.
In doing this I am currently only using one fuel line to the front of the car (although I will be running a return line incase it is needed in the future)

[Rebel1]

Originally Posted by boxhead

The way mine is set up Les is that I am using a standard pump to draw the fuel from the tank and Aussie Mike made a swirl pot that the commodore pump (the type I have) fits inside.
In doing this I am currently only using one fuel line to the front of the car (although I will be running a return line incase it is needed in the future)

Understand that Box, and was something I am considering. The reason being that I have a carter electric pump previously fitted to the tank....I could use that to pump to a separate swirl tank.

However, I see this as duplication....I can understand Mike doing this as he will track his car but for a weekend driver I think that's an overkill.

It seems that a healthy LS2/L76 can be made to develop some 400 and a bit HP at the rear wheels with a cam and tune.

It also seems that the standard pumps are good for about that but for how long is the question. On the track one would need more fuel for sustained high revs., but on the road the only need might be between stop lights.

That's why I'm looking for an efficient in tank set up that is simple, yet wont starve the injectors for short distance at high revs.

I suppose that behind all this is my thought that 400RWHP is the point at which a cobra turns from an enjoyable drive into something that one needs to be very careful of.

Cheers and thanks for the help
Les