supercharger questions

9

94gtslow

Founding Member

Jan 26, 2002

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Temple,Texas

Oct 11, 2004

#1

• Oct 11, 2004

• #1

can i run a blower with my 30# injectors?

And is it ok with p head since it raises the compresion?

can u run a blower with underdrive pulleys, not sure if mine are or not, car had a lost of mods when i bought it.

just looking on running blower or nitrous here soon, and trying to decide

 

ProKiller

Founding Member

Apr 26, 2002

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Oct 11, 2004

#2

• Oct 11, 2004

• #2

30#s are fine, i'm only running 24s. Vortech kits come with 24s, and a crank pulley, so u don't have to worry about the injectors, your fine. the underdrives don't matter, you get what u need from the kit. yes it will raise the compression, but the heads won't matter, its the pistons that make the difference. i would do a compression test to see what you have before you bolt on a blower. as long as your below 10:1 you should be good.

 

VibrantRedGT

"STANGNET'S PENGUIN SMACKER"

15 Year Member

Nov 29, 1999

14,679

424

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Boca Raton, Florida

Oct 11, 2004

#3

• Oct 11, 2004

• #3

You guys are crazy with small injectors. Can't use the pulleys. Put the stockers back on.

 

Joes95GT

New Member

Jan 23, 2003

3,132

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Delaware

Oct 11, 2004

#4

• Oct 11, 2004

• #4

VibrantRedGT said:

You guys are crazy with small injectors.

Click to expand...

Yahtzee!

How much does your motor mean to you? That should be the question.

Joe

 

94GTLaserRC

Squint as you approach, lest you be blinded by my

15 Year Member

May 7, 2002

11,178

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89

Ernan Says "here it comes... dushbag"

Oct 11, 2004

#5

• Oct 11, 2004

• #5

I dynoed an AFR of 13.5 with 30's and NO FMU and that was with AODE and stock heads/cam.

Repeat after me:

" 36 or 42
Unless you run an FMU"

Underdrive pulleys are OUT!
Fluidyne is IN!

RC

 

94TURBO5 O

New Member

Mar 14, 2004

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VA

Oct 11, 2004

#6

• Oct 11, 2004

• #6

VibrantRedGT said:

You guys are crazy with small injectors. Can't use the pulleys.

Click to expand...

Exactly
Get the 42's with no FMU and def don't put on underdrive pullies.

 

9

94gtslow

Founding Member

Jan 26, 2002

401

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0

Temple,Texas

Oct 11, 2004

#7

• Oct 11, 2004

• #7

so would i be with the 9.5 or so compresion and the 30#S?

what kinda numbers shuold i out down, or whats better the blower or the nitrous?

 

VibrantRedGT

"STANGNET'S PENGUIN SMACKER"

15 Year Member

Nov 29, 1999

14,679

424

154

Boca Raton, Florida

Oct 11, 2004

#8

• Oct 11, 2004

• #8

94gtslow said:

so would i be with the 9.5 or so compresion and the 30#S?

what kinda numbers shuold i out down, or whats better the blower or the nitrous?

Click to expand...

Engine compression has nothing to do with fuel pressure.

With a blower and 10psi probably 420HP or so. That's if tuned correctly on a dyno. I think you could keep the injectors you have now and occasionally spray a 100HP shot when needed. I would do the Nitrous.

 

Joe 5.0

Founding Member

Feb 1, 2002

1,184

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38

Macomb, MI (metro detroit)

Oct 11, 2004

#9

• Oct 11, 2004

• #9

Prokiller said Vortech's kit comes with 24's, is that right? I was under the assumption that the FMU was designed to work the stock injectors.

I am contemplating a S-Trim purchase myself. Actually I've started putting away some $$ for it already.

 

9

94twinscrew

New Member

Sep 11, 2004

10

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Oct 12, 2004

#10

• Oct 12, 2004

• #10

"Engine compression has nothing to do with fuel pressure.

With a blower and 10psi probably 420HP or so. That's if tuned correctly on a dyno. I think you could keep the injectors you have now and occasionally spray a 100HP shot when needed. I would do the Nitrous.
Today 08:51 PM "............

Actually,it does.

10psi,and occasionally squirt a 100shot when needed??That would bring his stactic CR up to @18.5:1,...he would be lucky to be able to pull that one off with 42's,and a 255pump.The more boost that you throw at an enine,the more your compression ratio will increase.Higher Cr's need more fuel and less timing, to be able to avoid detonation.

30's will be fine as long as you have a good pump,and don't get too greedy with the boost. 8-10#s will be safe,...and a BTM would allow you run up to 14 or so.

 

P

ProCharge94

20+ Year Stangneter

Aug 31, 2004

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7

Jax, FL

Oct 12, 2004

#11

• Oct 12, 2004

• #11

boosting your car will give you constant power that does not require you to fill a bottle. nitrous is great, but nasty in a mustang, especially with a large shot. 30lb injectors with a good pump and 10psi will run great. Instead of a FMU, just get a 1:1 boost ratio adjustable fuel pressure regulator.

 

Venom351R

Founding Member

Apr 27, 2002

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MAINE

Oct 12, 2004

#12

• Oct 12, 2004

• #12

Im running #30's

 

Joes95GT

New Member

Jan 23, 2003

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Delaware

Oct 12, 2004

#13

• Oct 12, 2004

• #13

94twinscrew said:

Actually,it does.

10psi,and occasionally squirt a 100shot when needed??That would bring his stactic CR up to @18.5:1,...he would be lucky to be able to pull that one off with 42's,and a 255pump.The more boost that you throw at an enine,the more your compression ratio will increase.Higher Cr's need more fuel and less timing, to be able to avoid detonation.

30's will be fine as long as you have a good pump,and don't get too greedy with the boost. 8-10#s will be safe,...and a BTM would allow you run up to 14 or so.

Click to expand...

How do you figure the compression ratio will be 18.5:1? Compression is the ratio of volumes within the cylinder while the piston is at BDC and TDC. How would boost or nitrous bring the STATIC compression ratio up when compression ratios have nothing to do with induction style? If you want to get technical, how would it affect DYNAMIC compression? You let us know...

To the original poster - I'd go with nitrous if you've got the means to refill the bottles constantly. Richen up the car big time and sneak up on the tune. It would be very smart of you to get the car dyno tuned after whatever course of action you decide to take.

Joe

 

94TURBO5 O

New Member

Mar 14, 2004

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Oct 12, 2004

#14

• Oct 12, 2004

• #14

94gtslow said:

so would i be with the 9.5 or so compresion and the 30#S?

what kinda numbers shuold i out down, or whats better the blower or the nitrous?

Click to expand...

What are your goals?
450+ rwhp?
12's, 11's, 10's?
What's your budget $$$ wise?

 

ProKiller

Founding Member

Apr 26, 2002

3,064

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PA

Oct 12, 2004

#15

• Oct 12, 2004

• #15

i got 390rwhp with 24# injectors with FMU. tuned. only running about 8lbs of boost. most boost, more fuel needed.

OT: joe, when u ran the 2.82" pulley how much boost were you seeing?

 

9

94gtslow

Founding Member

Jan 26, 2002

401

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0

Temple,Texas

Oct 12, 2004

#16

• Oct 12, 2004

• #16

what is a BTM?

i have a 190 intake pump, dunno if thats good enough, or what comes with vortechs kit.


all im looking for is to run an 11.9-11.8 on good tires of course.


I dunno how much power, maybe 400 to the wheels, i dunno what it will put out, have no idea.

what is an fmu and what kind do i need if i need one at all.

 

9

94gtslow

Founding Member

Jan 26, 2002

401

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0

Temple,Texas

Oct 12, 2004

#17

• Oct 12, 2004

• #17

hey prokiller its says on your site u got 460 rwhp is that with the 24#s?

 

P

ProCharge94

20+ Year Stangneter

Aug 31, 2004

71

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7

Jax, FL

Oct 12, 2004

#18

• Oct 12, 2004

• #18

You do NOT need an FMU, an adjustable fuel pressure regulator has greater benefits. http://store.summitracing.com/defau...Ntk=KeywordSearch&Ntt=fuel+pressure+regulator

 

9

94gtslow

Founding Member

Jan 26, 2002

401

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0

Temple,Texas

Oct 12, 2004

#19

• Oct 12, 2004

• #19

i have a fuel pressure regualtor already


plz reply

 

94TURBO5 O

New Member

Mar 14, 2004

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VA

Oct 12, 2004

#20

• Oct 12, 2004

• #20

94gtslow said:

all im looking for is to run an 11.9-11.8 on good tires of course.


I dunno how much power, maybe 400 to the wheels, i dunno what it will put out, have no idea.

Click to expand...

I bought my combo with just the S-Trim tuner kit, 42's, 255 FP, FPR and that was it. I added the PMS and methanol kit and hit 11.80's on Nitto DR's. I'm gonna try some slicks next time. I only got in 2 runs but I'm sure it's good for lower ET and I'm not a great driver either.
I'm still on stock internals, heads, fuel rails, cam, etc....just look at my sig.