60 Lb Hr Injectors?

CarMichael Angelo · Jan 30, 2014

Thinking about injectors today. I want to be sure that I get an injector big enough for my hp aspirations, that will not be too big as well. I'm sure that there a injector size calculators
out there that can help me answer this question but I'm gonna throw it out here to be extra thorough.

250 c.i.
16/18 psi
6 cyls
450 whp @ 6000 RPM.

Noobz347 · Jan 30, 2014

42 lb/hr injectors unless you're planning on running E85. Then the 60s.

madspeed · Jan 30, 2014

Whatever you get, you'll have two spares

CarMichael Angelo · Jan 31, 2014

Noobz347 said:
42 lb/hr injectors unless you're planning on running E85. Then the 60s.

Really? Every calculator I used recommended at least 60 pounders.

CarMichael Angelo · Jan 31, 2014

madspeed said:
Whatever you get, you'll have two spares

Naaah. You can buy them individually, or in sets of 6. ( They do make engines with less than 8 cylinders..........You know that.............Right?)

madspeed · Jan 31, 2014

Yeah, its us screwballs that keeps the rest of the world in check. Me and my 5 cylinder Volvo...

madspeed · Jan 31, 2014

http://www.witchhunter.com/injectorcalc1.php

I like this one

7991LXnSHO · Jan 31, 2014

Related question - how big of a fuel cell and what pump will you run? Also, what is the limit on your fuel card? It sounds like the "eco" can be left off of your boost plaque.

f8tlfiveo · Jan 31, 2014

I have 60's for my turbo setup which should be more than enough for my plans of 400-450hp with boost

A5literMan · Jan 31, 2014

You're running a Ms3 aren't you? From what I've read 60's would be ideal but you can make 42's work

elarm1 · Jan 31, 2014

Where you getting the 42 pounders from?

A5literMan · Jan 31, 2014

elarm1 said:
Where you getting the 42 pounders from?

Well obviously not getting them new. Lol.

Decipha · Jan 31, 2014

42s will ONLY support AT MAX 360rwhp on a v6

heres a calculator for all your needs

http://info.efidynotuning.com/pre.htm

Decipha · Jan 31, 2014

btw, just put some 80's in it and be done

CarMichael Angelo · Jan 31, 2014

7991LXnSHO said:
Related question - how big of a fuel cell and what pump will you run? Also, what is the limit on your fuel card? It sounds like the "eco" can be left off of your boost plaque.

The fuel cell I have is the stock tank, sump'd. I'm using a Mallory marine external pump. Fuel card?

A5literMan said:
You're running a Ms3 aren't you? From what I've read 60's would be ideal but you can make 42's work

MS II w/a version 3.0 processor. I'm gonna go with the 60's. The last turbo project had me w/ three sets of injectors after I had to keep upgrading them to keep the injectors from maxing out. Not gonna do that this time.

There is this guy on eBay that is selling a new set of Bosch style injectors rated at 60 lbs hr. for $299.00 for 8. I think he sells 6 cylinder sets for 250.00 they supposed to be new, and flow matched to some crap like 2%, I think I'll give them a try.

madspeed · Jan 31, 2014

Decipha said:
42s will ONLY support AT MAX 360rwhp on a v6

heres a calculator for all your needs

http://info.efidynotuning.com/pre.htm

Great ittle page of info there-. Curious as to why injectors support less hp on 4 and 6 cylinders versus same injectors on a v8?

A5literMan · Feb 1, 2014

madspeed said:
Great ittle page of info there-. Curious as to why injectors support less hp on 4 and 6 cylinders versus same injectors on a v8?

X2

RangerJoe · Feb 1, 2014

I would assume it is becaus there are six injectors doing the work of eight. A 400hp v8 would need each injector to support 50hp each. If you had a v6 with the same 50hp injector, you could only support 300hp.

Now, this is based on my crazy reasoning in my head. Anyone care to confirm or denying this logic?

Joe

Decipha · Feb 1, 2014

correct
if you have a v8 engine making 400 hp, each injector only needs to support 50hp

If you have a 4cylinder engine making 400hp, each injector will need to support 100hp

does that help any?

Noobz347 · Feb 1, 2014

madmike1157 said:
Really? Every calculator I used recommended at least 60 pounders.

madspeed said:
Whatever you get, you'll have two spares

A point that I missed when I replied above. When I said 42s for 450+ hp, that was assuming 8 cylinders. 450 HP requires just about the same amount of fuel regardless of cylinder numbers. It would easily take 6 x 60 lb injectors, to equal 8 x 42 lbs. So you're probably correct Mike.

60 Lb Hr Injectors?

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my rearend will smell so minty fresh,

my rearend will smell so minty fresh,

Colonel Mustard

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wanna catch the space herp

My wife likes my spool and blow-off valve.

At least it is lumpy...

At least it is lumpy...

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my rearend will smell so minty fresh,

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At least it is lumpy...

I leave the horn on while driving

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