What rpm does a 60-1 spool
#7
Back from teh deadly!
Join Date: Feb 2001
Location: Louisville KY 40299
Posts: 1,163
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by darkwaveboi
do streetports make turbos spool sooner or later?
do streetports make turbos spool sooner or later?
Given the same turbo, the more volume you can flow through the turbine, the faster it will spool.
The whole goal of porting is to get more air into each combustion chamber per stroke. This would increase the volume of exhaust gasses...
So given the same turbo, and assuming the port job was done right; porting an engine will cause a turbo to spool sooner.
Trending Topics
#8
I came, I saw, I boosted.
Join Date: Apr 2001
Location: Windsor, Ontario, Canada
Posts: 1,921
Likes: 0
Received 0 Likes
on
0 Posts
Not at a lower RPM though.
Larger ports=more port volume=lower port flow velocity=less ramcharge effect=lower low-rpm power=longer spool up time.
At higher RPM's turbo lag may be reduced, since more power is beig made, and mode exhaust gas, but spool up time in low-rpms is increased.
Larger ports=more port volume=lower port flow velocity=less ramcharge effect=lower low-rpm power=longer spool up time.
At higher RPM's turbo lag may be reduced, since more power is beig made, and mode exhaust gas, but spool up time in low-rpms is increased.
#9
Rotary Enthusiast
Join Date: Aug 2001
Location: Tallahassee, FL
Posts: 1,402
Likes: 0
Received 0 Likes
on
0 Posts
You're assuming that porting always decreases low-RPM torque. This is not always the case. Properly-executed porting can drastically increase torque below 3500 RPM (the usual point at which a 60-1 w/ 1.0 exh A/R will make full boost).
Brandon
BR7 Racing
Brandon
BR7 Racing
Thread
Thread Starter
Forum
Replies
Last Post
LongDuck
1st Generation Specific (1979-1985)
12
10-07-15 08:12 PM
eplusz
General Rotary Tech Support
15
10-07-15 04:04 PM