In an archived post, Viren suggested 12AN feed and 10AN return (I assume a 4 injector setup). Is this pretty much the standard?
Would running 10AN/8AN not supply enough volume.
Why would 8AN/8AN or 10AN/10AN be a problem with an adjustable fuel pressure regulator?

I am running a setup w/o an FMU, 4 1000-1200cc injectors OR (4 440's/4 997cc) on a full race car. Haltech or DTA controlled.

And how would one bore out like perhaps an AEM fuel rail?

 

I personally havent ran the car yet but Im setting up my car as of right now (or actually right now im freezing my **** off in rhode island ) but the situation on the fuel line size is you dont want to bottle up the feed to the injectors as I understand.
And if this a full race car than I think youll want to run larger injectors if you dont want to run eight than just try 1600 or even 1800 but I think the pulse wont be to good on the second one. Actually what setup are you running? If theres anyone to ask on this board it would be Tony1 sense his teams car is the quickest in hot rod.
I would try running 8 1400cc injectors its always good to have more fuel than not enough. Hope I helped you out. Keep in mind I havent started my car yet so IM not 100% on this, I think you should just give tony1 a shout.good luck man-pdang

 

we used a -10/-8 on our Speedpro Methanol setup




[Modified by hondaswaper, 6:33 PM 12/20/2002]

 

thanks pdang, 'preciate it.
Definately don't mind running massive injectors and short pulses.
I just liked the idea of starting/idling with the 440's inthe primary spot and switching to ~1000 or larger dumping from the secondary spot to mix more evenly.

Oh, sigh...this is the funny part. I've been such an advocate of high comp/less boost for the same BMEP. So I figured running 26lbs on 12.5:1. And my friend who's helping be build this thing and I were talking about the fueling issues. All he had to say to dissuade me was, "Well, the next spot on your team will have to be a petrochemical engineeer"

Anyway, 2L. higher than 10.2 CR and a 60-1 with .82 Turbine AR to push the air through. Water intercooled, and like I said before, Haltech or DTA controlled

I need to PM Tony1 as he's been hella helpful before . Just wanted to see any other responses as there are so manypeople seeming to be stepping up to the plate for next season.

 

12 and 10 is what Tony will say. We will probably run 8 1000cc's. You will need a Weldon 2045 or 2345 to feed them. Any smaller pump won't work although two 2035's will work also.

 

I used 1 2035 pump and 4 1600cc injectors without a problem. I think you mean you need 2 2025 pumps. I never heard of a 2045? The 2035 pump will work up to 880 flywheel hp with 4 1600 cc injectors and with 8 injectors at less pressure it should work up to 950 flywheel. I also used a -12 into the pump, -10 feed, and a -8 return and it worked fine.


[Modified by turbohonda, 3:24 AM 12/21/2002]

 

I have the SX 18203. The site says it handles up to 700hp injected Gas and 350hp injected alcohol. http://www.fluidcontrol.net/pages/pumps.html
That seems kinda low.

So will the big SX handle what I'm throwing?

the Weldons push like twice as much, damn. So I guess not.
At least one of the Weldon Dealers/Repair shops is here in Orange Park


[Modified by Pelican, 10:53 PM 12/20/2002]

 

How do you guys keep the methanol from rotting the rubber in the fuel hoses? Do you just change them after xyz number of passes? When we ran methanol aka alky in our karts, we doubled the jet sizes and everything that was rubber was replaced with a stuff called "viton" if I remember correctly.

Sonny

 

we run gas in it after the race..........and store it with gas in it..........

 

2045 was replaced by the 2345. Both have 260gph ratings. The 2035 is a 210gph rating. The 2 of the 2035 pumps comes from Tony1. He told me that the one maxed out on whp way too soon. We still can't kick our gas habit

 

It's almost like you've asked me this before or something

4 1600's run out of fuel at around 660whp on methanol. We ran out of fuel with 4 800's and 4 1600's at around 850-900whp. We are going with 8 1600's next season. You want the biggest line you can going into the pump and a -12 coming out. -10 on the return seems to work well. The sx pump will NOT be big enough and the sx regulator has too small a return hole as well. You need the weldon regulator with the bigger orifice for the return. You will probably want to go with a bigger turbo than a 60-1 if you really want any big power. Methanol spools the turbo quite a bit quicker than gas so that's a plus! Also, with the aem rail, it will work if you weld the fittings directly on the rail instead of screwing them in. The bore is big enough if your running 8 injectors as long as you don't screw a fitting into it. Once you screw a fitting in, the inner diameter is too small at the ends and will be a restriction. If you weld them on it will be the same diameter all the way through. If you need me to weld the ends on I can.

 

So you are saying to cut off the pipe threaded portion of the -12 fitting and the id of that fitting matches to the id of the inlet to the fuel rail and just weld the AN half to the end of the rail? And you would need to do this to both rails of an 8 injector system? That 2045 must be one powerful pump.
BTW, did those main bearings i sent you work out?

 

you guys kick ***!!



[Modified by Pelican, 1:20 AM 12/21/2002]

 

SX is a great gasoline pump. It's not about horsepower that qualifies it as a usable pump. The SX is a wet pump meaning that gasoline flows thru the motor portion to cool it. You cannot run methanol thru it because alcohol conducts electricity much much better than gasoline. The pump will short out internally on alky. The SX is rated at about 87gph. The Weldon has a seperate electric pump that drives an impeller to pump the alky. The Weldon has 2-3 times the pumping capacity and 5 times the price.

 

yeah, you can cut a regular fitting in half or get an aluminum weld on fitting from XRP. With the weld on one you don't have to bother with removing the anodizing before you weld it, they are already bare. When it's all said and done, you want the inner diameter to be the same size all the way through. The 2045 is a HUGE pump!

The bearings worked great, thanks!

 

How does the fact that there is no anodizing on the fitting affect the reaction of alky on the bare aluminum? Seems like it will eat at it

 

we made 720 WHP with 4 1600's and the 2035..... the pump and injectors were allmost maxed though.......

[Modified by hondaswaper, 5:14 AM 12/21/2002]


[Modified by hondaswaper, 5:16 AM 12/21/2002]

 

so a single 2045 and 8 1200's should be choice. I don't expect the 60-1 could push any more air than that could handle.

Then I have an SX fuel pump for sale, the "Big" one.
If Viren is still selling the 1200's for the low low.....

 

Yes, you need to anodize all bare aluminum parts with methanol!