Boost question - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Superchargers | Turbos | N2O
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 03-22-2004, 01:31   #1 (permalink)
Now boostless :-(
 
NAPARM's Avatar
 
Join Date: Feb 2002
Location: Northern NSW
Age: 31
Posts: 695
Boost question

If a car (supercharged) makes 9 psi in 4th gear, does that mean it should also make 9 psi in 1st gear???
Reason i ask is because on the dyno my car was making just under 9psi but the max boost it makes in 1st gear (according to my boost gauge) is about 6 psi. Or are boost gauges not that accurate?

Cheers, Dave.
NAPARM is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-22-2004, 04:04   #2 (permalink)
Two SC 61's = trouble
 
ebxr8240's Avatar
 
Join Date: Jul 2001
Location: Penrith,nswAus/Morrinville.NZ
Age: 60
Posts: 6,360
Re: Boost question

If it was turocharged I'd say yes.But I guess load plays into it as well although with S/C boost is more linial to revs compared to turbo...Not that we are comparing...Also revs and load may not be taken as high in first gear...
__________________
Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
.
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
Passengers, myocardial infarction material..
R.I.P Possum...
ebxr8240 is offline   Reply With Quote
Old 03-22-2004, 04:35   #3 (permalink)
Blown ED XR6
 
Join Date: Jan 2002
Location: Townsville, Australia
Age: 36
Posts: 89
Re: Boost question

Boost guages are accurate enough. ebxr8240 is on the right track with load to an extent. It's more to do with flow rates, in that at high revs you'll have more flow through the engine and in different gears you'll have different flow as well due to torque etc etc.

At least that's my theory, I'm no physicist. You can creep up the revs and not make any boost at all at times so that's my evidence. Hehe.
__________________
ED XR6 Sedan - Cammed, Ported, Polished, Shaved, Decked, Blown, Intercooled, Extracted, Hi-Stalled, Chipped.
Xeron is offline   Reply With Quote
Old 03-22-2004, 04:53   #4 (permalink)
Looking in YOUR bathroom.
 
Join Date: May 2002
Location: Adelaide
Age: 30
Posts: 3,287
Re: Boost question

what sort of supercharger? If its positive displacement then it should have the same boost regardless of gear. Technicaly same should be true of centrafugal.
__________________
Ive been described as a vault of usless random knowledge.

Ill take it as a complement i think.............
Walkinshaw is offline   Reply With Quote
Old 03-22-2004, 12:42   #5 (permalink)
Now boostless :-(
 
NAPARM's Avatar
 
Join Date: Feb 2002
Location: Northern NSW
Age: 31
Posts: 695
Re: Boost question

It's a centrifugal blower - 9psi Powerdyne.
NAPARM is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Superchargers | Turbos | N2O



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Varying boost on turbo'd 4L EA Turbo Clone Superchargers | Turbos | N2O 5 01-28-2004 02:23
Ford, other carmakers expect tax cut to boost Indian car sales Stacy94PGT Ford Worldwide News 0 03-05-2003 08:53
Ford expects to boost exports from Brazil Stacy94PGT Ford Worldwide News 0 01-28-2003 05:59
Job application question: HSE2 The Pub 8 05-06-2002 00:12
boost EB2Ghia Superchargers | Turbos | N2O 14 04-14-2002 17:41

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 12:22.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.