Is IT WORTH PORTING THE STOCK MANIFOLD AND THROTTLE BODY???
#16
Evolved Member
iTrader: (9)
My stupid throttle body shaft seal is leaking real bad My friend keeps telling me that I'm losing power from it but I don't think it's much but I did notice my throttle response is not as good as it use to..I wonder How much power you can gain from fixing those seals.
#18
Evolved Member
Anyone know if the flow differences get worse with these port jobs? The stock manifold has a pretty good balance of flow between cylinders, and I've seen tests where a port job (though it flowed more air) increased the flow more to the 3rd and 4th cylinder, and a little to the 2nd, but didn't do much for the 1st.
This can be an issue with higher power builds.
This can be an issue with higher power builds.
#19
Account Disabled
Thread Starter
Join Date: Aug 2010
Location: with idiots
Posts: 444
Likes: 0
Received 0 Likes
on
0 Posts
I'm not sure about power loss, but I picked up about 2-300rpm spool on the dyno from correcting my throttle body leak...stock turbo. the good thing is, if u go with a core exchange for the TB u will get a 65mm with replaced 'high pressure' seals. I got mine from Works cus i didnt want to go thru the trouble of removing my IM so I just left it at stock diameter. I can say w/o a doubt u will pick up spool by fixing it.
At the power level I'm at now I could care less for 5 whp for the shaft seal but if I'm gonna gain spool up that's what I'm taking about .I made my mind up I'm gonna go either with a works Stage 2 or a milspec body ported with high pressure seals and wait out for the manifold and do a magnus v5 with my motor build all at one shot ..If I could get my turbo to spool 2-300rpms faster that would be awesome!!
#21
Former Sponsor
iTrader: (38)
Intake manifold P&P will produce significant gains on any Evolution, stock turbo or otherwise. Our Rev3 was part of two different stock ECU record breakers (762whp and 814whp) and yielded up to 500rpm faster spool up. To the best of my knowledge our Rev3 service and one of the Wilson manifolds are the only ones to have cut open the plenum which provides access to every square inch of the plenum and runners for the absolute best performance from shaping, porting, and polishing. If you're looking for increased top end and improved spool characteristics there is no better option in my opinion. I will concede, however, that at some point the larger plenum of a manifold like the Magnus V5 or AMS will yield better top end performance, but low and mid range will most certainly suffer.
In our testing flow was improved throughout (I will have to find the numbers tomorrow if you're interested), and the imbalance between the cylinders was significantly reduced in comparison to stock
Anyone know if the flow differences get worse with these port jobs? The stock manifold has a pretty good balance of flow between cylinders, and I've seen tests where a port job (though it flowed more air) increased the flow more to the 3rd and 4th cylinder, and a little to the 2nd, but didn't do much for the 1st.
This can be an issue with higher power builds.
This can be an issue with higher power builds.
Last edited by ChrisCarey; Aug 30, 2010 at 09:23 PM.
#23
Intake manifold P&P will produce significant gains on any Evolution, stock turbo or otherwise. Our Rev3 was part of two different stock ECU record breakers (762whp and 814whp) and yielded up to 500rpm faster spool up. To the best of my knowledge our Rev3 service and one of the Wilson manifolds are the only ones to have cut open the plenum which provides access to every square inch of the plenum and runners for the absolute best performance from shaping, porting, and polishing. If you're looking for increased top end and improved spool characteristics there is no better option in my opinion. I will concede, however, that at some point the larger plenum of a manifold like the Magnus V5 or AMS will yield better top end performance, but low and mid range will most certainly suffer.
In our testing flow was improved throughout (I will have to find the numbers tomorrow if you're interested), and the imbalance between the cylinders was significantly reduced in comparison to stock
In our testing flow was improved throughout (I will have to find the numbers tomorrow if you're interested), and the imbalance between the cylinders was significantly reduced in comparison to stock
#25
Account Disabled
Thread Starter
Join Date: Aug 2010
Location: with idiots
Posts: 444
Likes: 0
Received 0 Likes
on
0 Posts
#27
Evolved Member
Interesting. Is this achieved with a standard port, or would someone have to opt for the rev3?
#28
Account Disabled
Thread Starter
Join Date: Aug 2010
Location: with idiots
Posts: 444
Likes: 0
Received 0 Likes
on
0 Posts
For that price It rather have a real manifold not a ported I wanna see someone test the rev 3 against the v5!!!!!!!!
#30
Former Sponsor
iTrader: (38)
Can you define a "real" manifold? lol The answer is simple, if you are looking for the absolute most peak horsepower, go with a larger plenum like the Magnus v5. If you're looking to increase performance across the board and improve spool characteristics there is no better option than a ported stock manifold, and in my opinion no better option that our Rev3