Christmas Present

[key750]

perth-evo said:

Hi AlexCim, thanks for your suggestions. I have seen quite a few threads about this but believe (in my naivety?) that the factory set up has improved significantly over the last year or so. I may live to regret it but am building the car to their spec. Thanks again

Lotus elise 111 scrub radius 10mm
Mazda Miata scrub radius 0mm
MC Laren F1 scrub radius 16mm
Corvette C5 scrub radius 10mm
Ultima GTR scrub radius 120mm circa?
Ultima Evo scrub radius 95mm circa? (After 12 years)
To have a normal scrub radius we have to wait 36 years?
Probably fuel system have to wait same time to be perfect.

[AlexCim]

Up to you mate, I still suggest you remove the tanks and weld on a -12 fitting just in case you change it later as it's impossible to do it nice and low in the tank with the tanks in and too much of a pain in the dick to unrivet/glue the entire body later.

[deadscoob]

Absolutely agree. If I did it again I'd have customs tanks with built in pumps, so much better.

[UltimaCH]

deadscoob said:

Absolutely agree. If I did it again I'd have customs tanks with built in pumps, so much better.

+1

[ROWDYRENAULT]

I would go just a bit further than Alex suggested. I would connect the tanks as he suggested then I would install a Aeromotive in tank pump and filter assembly in each tank. plumb them to a common pressure regulator feed the over flow back to one of the tanks. not to the fitting on the Aeromotive housing, a separate fitting away from the fuel pump. Now you have a simple system thats redundant, quite and little chance of overheating the fuel. You get rid of the stupid selector valve the out of balance caused by using one tank at a time you only need one fuel level sender . To me a big deal is the lack of connections needed to complete this less chance for leaks(fires) and its going to look a lot cleaner. Lee

[deadscoob]

And that is effectively what I've done. Nice and simple.

[AlexCim]

Yep, if I could do it all again (with the parts not in the car), I'd do intank pumps/filters as above. Will also be significantly quieter like that too.

[deadscoob]

Anyone with standard ultima tanks can use aeromotives in tank kits. They're very good quality and simple to fit, even when tanks are in situ.

[EVO CL]

Has there been any changes to the fuel system in the last few years with the later model GTR's and the Evo? I see a few complaints on here about the fuel system but the one person I've spoken to face to face with a 3 year old GTR I test drove to see what it was like before putting a deposit on an Evo said he's had absolutely no problems with the fuel system both on the road and very regularly on the track, he just said he followed the factories instructions exactly and didn't mess around with anything.

[deadscoob]

Some have had problems, others haven't, not sure why.

But just from a logical perspective, why have 2x pumps, 2x filters, valves and switches, let alone adding additional stuff for a surge tank setup, when you can just stick intank pumps in?

Obviously for owners who already have fuel systems which run fine there's no need, but for new builders at least, it's a no brainer IMO to go intank.

[drdrdrt]

Sounds like GREAT information!
Could someone please post part #s and supply list to accomplish this?
Thanks,
David