Theres always a weak link!

Department Of Boost

Alpha Geek
Joined
May 26, 2010
Posts
8,808
Reaction score
31
Wow, impressive.

Is there a way to make everything before the blower inlet bigger? In theory the inlet is restricting flow and therefore boost potential if there is any vacuum pre compressor. And you have some SERIOUS vacuum going on there. I’d wager you could pick up at least a few psi by just opening up the inlet side.

When I converted to a 3.4L Whipple we had to do some calculations for pulley combo because there was no data for a 3.4L/3v combo available. We did the calculations right, but missed because everything on the inlet side of the blower is STUPID BIG. When we first got on the dyno it was making WAY more boost than we wanted and despite making a lot of pulleys we were out of range. New pulleys had to be machined with the quickness. We were not expecting that opening the inlet side of things would have such a dramatic effect on boost. Granted, it is a good effect. We ended up being able to slow the blower way down and still make big boost numbers. Not a bad situation to find yourself in.

It doesn’t look like you have much room though. It would be nice if you could get a 6” inlet on that compressor.
 

05stroker

Never enough power guy!
Joined
Mar 2, 2008
Posts
13,089
Reaction score
100
Location
Bullard Tx.
Wow, impressive.

Is there a way to make everything before the blower inlet bigger? In theory the inlet is restricting flow and therefore boost potential if there is any vacuum pre compressor. And you have some SERIOUS vacuum going on there. I’d wager you could pick up at least a few psi by just opening up the inlet side.

When I converted to a 3.4L Whipple we had to do some calculations for pulley combo because there was no data for a 3.4L/3v combo available. We did the calculations right, but missed because everything on the inlet side of the blower is STUPID BIG. When we first got on the dyno it was making WAY more boost than we wanted and despite making a lot of pulleys we were out of range. New pulleys had to be machined with the quickness. We were not expecting that opening the inlet side of things would have such a dramatic effect on boost. Granted, it is a good effect. We ended up being able to slow the blower way down and still make big boost numbers. Not a bad situation to find yourself in.

It doesn’t look like you have much room though. It would be nice if you could get a 6” inlet on that compressor.

I think the issue was the dirty air filter. With it under the headlight it is hard to see and sometimes out of site is out of mind. It was dirty enough that I would have been embarrassing to post a pic. Lol

I do plan to test with filter and without back to back on the dyno.
 

Department Of Boost

Alpha Geek
Joined
May 26, 2010
Posts
8,808
Reaction score
31
I think the issue was the dirty air filter. With it under the headlight it is hard to see and sometimes out of site is out of mind. It was dirty enough that I would have been embarrassing to post a pic. Lol
That must have been one dirty filter! Shame on you!:naughty1:

I do plan to test with filter and without back to back on the dyno.

Please post the results. More info for the databanks.:thumb:
 

muztangman93

Senior Member
Joined
Apr 19, 2011
Posts
2,063
Reaction score
1
Location
Indiana
Id be interested to see out my power pipe would do in a testing situation. You should toss it on and see if it does anything numbers wise as well
 

05stroker

Never enough power guy!
Joined
Mar 2, 2008
Posts
13,089
Reaction score
100
Location
Bullard Tx.
Id be interested to see out my power pipe would do in a testing situation. You should toss it on and see if it does anything numbers wise as well

On the dyno I dont expect much change, but on the road I get cooler air with the filter under the headlamp.
 

sharkbaits

Member
Joined
Jan 12, 2012
Posts
606
Reaction score
0
I think the issue was the dirty air filter. With it under the headlight it is hard to see and sometimes out of site is out of mind. It was dirty enough that I would have been embarrassing to post a pic. Lol

I do plan to test with filter and without back to back on the dyno.


With the F series Blowers this is common! You best bet is to run no filter honestly. You if you have to you will need a straight silicone piece and a 90 out of aluminum or something along those lines. It will happen again.
 

05stroker

Never enough power guy!
Joined
Mar 2, 2008
Posts
13,089
Reaction score
100
Location
Bullard Tx.
With the F series Blowers this is common! You best bet is to run no filter honestly. You if you have to you will need a straight silicone piece and a 90 out of aluminum or something along those lines. It will happen again.
Problem I see with no filter is, the I/C becomes the filter. For race car I see what you are saying though.

I think I just need to install a silicone coupler instead of the PVC one I had and change the 10" filter every 4 to 6 weeks instead of one time a year for my little street car.
 

01yellerCobra

Senior Member
Joined
Apr 11, 2011
Posts
2,230
Reaction score
160
Location
San Diego, CA
Awesome power,,,,,:thumb:

Your second option from jegs would be great.

Why not use a screen when you go to the track? same as what i did with my turbo. It has been there for a while now.


Is that screen pretty stiff? I picked up some stainless screen from a local place and found out it was getting sucked into the blower. It left a perfect circle in the middle where the shaft hit.



Misspelling brought to you by Tapatalk
 

toorbeenee

turbine lunatic
Joined
Jul 12, 2010
Posts
1,356
Reaction score
1
Location
dubai
Is that screen pretty stiff? I picked up some stainless screen from a local place and found out it was getting sucked into the blower. It left a perfect circle in the middle where the shaft hit.



Misspelling brought to you by Tapatalk

i am not trying to take you guys off the thread subject...

yes sir it is pretty stiff,,,had for over a year now with no problems.
 

Latest posts

Support us!

Support Us - Become A Supporting Member Today!

Click Here For Details

Back
Top