[Z06] fast92 unported vs ported gains?
#1
Melting Slicks
Thread Starter
fast92 unported vs ported gains?
hi every one!
how much can be picked up by porting a fast92 on the heads and cam car?
I guess trying to figure out if it worth to port my fast92 intake
how much can be picked up by porting a fast92 on the heads and cam car?
I guess trying to figure out if it worth to port my fast92 intake
#5
Race Director
Your probably interested in before/after results, done in a controlled environment, and maybe Tony Mamo has these. I'm a big advocate, but can't prove it with numbers.
#7
My port jobs on the older 90/92 style intakes double the gains from the swap.....period.
Most guys see around 10-12 RWHP in out of the box trim.....most of my customers see 20-25 RWHP.....that's a significant gain when you consider my porting work is alot less than double the cost of the total cost of the install (more like 25%).
Its kind of a no brainer....if your spending all that time money and effort in the first place get the most from it.
OP.....PM me if you have any questions or email me even better
mamomotorsports@yahoo.com
There is a bit of a lead time now.....I'm pretty covered up in work but assuming this isn't a rush type of situation I should be able to accommodate you.
Cheers,
Tony
Most guys see around 10-12 RWHP in out of the box trim.....most of my customers see 20-25 RWHP.....that's a significant gain when you consider my porting work is alot less than double the cost of the total cost of the install (more like 25%).
Its kind of a no brainer....if your spending all that time money and effort in the first place get the most from it.
OP.....PM me if you have any questions or email me even better
mamomotorsports@yahoo.com
There is a bit of a lead time now.....I'm pretty covered up in work but assuming this isn't a rush type of situation I should be able to accommodate you.
Cheers,
Tony
__________________
Please take the time to also visit my website at www.MamoMotorsports.com
Please take the time to also visit my website at www.MamoMotorsports.com
#8
Race Director
Not really data, but I had the stock clutch, with no problems, before installing my ported FAST90. Second run to redline caused the pedal to the floor routine. No amount of bleeding helped.
#9
Melting Slicks
Thread Starter
Tony Mamo not sure how some are only getting 10 to 12hp unported I got 19 unported on a 2000 z28 bolt'on & tune only car... same dyno weather condition was close but a little more humid
I thought someone would have stock 92 vs port dyno numbers
here is a swap done by speed from ls6 to fast 92
http://www.speedinc.com/uploads/FAST92.jpg
I thought someone would have stock 92 vs port dyno numbers
here is a swap done by speed from ls6 to fast 92
http://www.speedinc.com/uploads/FAST92.jpg
Last edited by Stroker87; 06-10-2015 at 10:26 AM.
#10
Drifting
#11
Melting Slicks
Thread Starter
#13
Tony Mamo not sure how some are only getting 10 to 12hp unported I got 19 unported on a 2000 z28 bolt'on & tune only car... same dyno weather condition was close but a little more humid
I thought someone would have stock 92 vs port dyno numbers
here is a swap done by speed from ls6 to fast 92
http://www.speedinc.com/uploads/FAST92.jpg
I thought someone would have stock 92 vs port dyno numbers
here is a swap done by speed from ls6 to fast 92
http://www.speedinc.com/uploads/FAST92.jpg
Your results are the exception, not the rule.....also who's to say if you changed nothing that day but tuned it better that wasn't worth 6-7 RWHP putting the gains of the swap closer to where I quoted and you can find independently are alot more common (some guys saw single digits btw).
If you carefully examined the runner of your stock FAST and a properly ported one that I handle the difference is night and day and you wouldn't have to be an expert in airflow to realize its fairly compromised in out of the box trim. There is a wedge of plastic that intrudes into the port close to .200 that I remove that goes up one side wall of the port....that's just one of the obvious things I handle. I have seen alot of ported intakes (home grown and shops) and most miss the finer details which all told add nicely to the bottom line. Without a ton of time invested experimenting on a flow bench it would be difficult to find these things and you have to be well versed in porting and the black art of airflow dynamics (messing with an "invisible" entity....LOL).
A newer 102 is actually a good bit better out of the box and you would be surprised how much plastic I take out of one of those....i would venture to say an older 90/92 style I remove 20% more plastic easily.
Check this thread....its pretty informative. Understand I was the first guy in the country to start whittling on these when they first came out.....I kind of pioneered the entire process and have spent more time grinding flowing these over the last decade than any one on the planet. Google "Tony Mamo FAST" if you don't believe me....LOL
Here is the thread thats worth a quick look.....keep in mind this was a 102 FAST and I remove alot more plastic from a FAST 92 mm manifold like we are discussing here.
http://ls1tech.com/forums/generation...-102-fast.html
Like I started this thread.....its a no brainer if you want to maximize the airflow gains from the swap.....and the entire reason your installing this item is to do just that. Its very compromised in out of the box trim but yes....its still a step up from stock (which was never designed to be a true performance item). It all depends on how committed you are to optimizing the build (and budget) is what it all comes down to.
If I can be of some assistance guys you know where to find me!
Cheers,
Tony
PS.....Some manifold testing....the best way to test mods to the manifold design is have it parked in front of a set of heads.....the better you do porting it the less restrictive it appears on the flowbench (your net flow numbers thru the intake increase). Flowing a manifold by itself isn't truly representative of whether you increased or decreased performance from the mods performed as it doesn't represent real world conditions very well.
PSS....Note the injector holes blocked off as well as the other runners not being tested (you can see the edges of the white duct tale covering a few of them).....you have to force the test to draw air thru the plenum only just like it would on a running engine.
Last edited by Tony @ Mamo Motorsports; 06-10-2015 at 08:39 PM.