Ported intake dyno.
Thread Starter
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
Ported intake dyno.
Just dyno'd today after installing a ported stock intake manifold on Sun. 3-18. Dynojet 248, SAE corrected, smoothing 5.
384.42 RWHP/381.76RWTQ
Previous dyno w/1 7/8" Dynatech headers, w/cats, Lingenfelter CAI,160° stat, CoW tune was;
375.97RWHP/370.07 RWTQ
Gains of 8.45 RWHP and 11.69RWTQ
I added a cheap "catch can' while I had the intake off, there was a lot of oil coating the inside of the intake;;
A 1/4" air compressor filter from Home Depot @ $11.97
2, 90° 1/4" npt fittings @ $3.84 ea
2, 1/4" npt to 3/8" tubing fittings @ $2.76 ea
2'+ of 3/8" fuel line hose @ $4.41 ea
4, hose clamps @ $0.59 ea
Total of $38.35
Barely 150 miles and oil in the plastic bowl already!
384.42 RWHP/381.76RWTQ
Previous dyno w/1 7/8" Dynatech headers, w/cats, Lingenfelter CAI,160° stat, CoW tune was;
375.97RWHP/370.07 RWTQ
Gains of 8.45 RWHP and 11.69RWTQ
I added a cheap "catch can' while I had the intake off, there was a lot of oil coating the inside of the intake;;
A 1/4" air compressor filter from Home Depot @ $11.97
2, 90° 1/4" npt fittings @ $3.84 ea
2, 1/4" npt to 3/8" tubing fittings @ $2.76 ea
2'+ of 3/8" fuel line hose @ $4.41 ea
4, hose clamps @ $0.59 ea
Total of $38.35
Barely 150 miles and oil in the plastic bowl already!
Drifting
Joined: Jul 2005
Posts: 1,533
Likes: 0
From: az
Just dyno'd today after installing a ported stock intake manifold on Sun. 3-18. Dynojet 248, SAE corrected, smoothing 5.
384.42 RWHP/381.76RWTQ
Previous dyno w/1 7/8" Dynatech headers, w/cats, Lingenfelter CAI,160° stat, CoW tune was;
375.97RWHP/370.07 RWTQ
Gains of 8.45 RWHP and 11.69RWTQ
I added a cheap "catch can' while I had the intake off, there was a lot of oil coating the inside of the intake;;
A 1/4" air compressor filter from Home Depot @ $11.97
2, 90° 1/4" npt fittings @ $3.84 ea
2, 1/4" npt to 3/8" tubing fittings @ $2.76 ea
2'+ of 3/8" fuel line hose @ $4.41 ea
4, hose clamps @ $0.59 ea
Total of $38.35
Barely 150 miles and oil in the plastic bowl already!
384.42 RWHP/381.76RWTQ
Previous dyno w/1 7/8" Dynatech headers, w/cats, Lingenfelter CAI,160° stat, CoW tune was;
375.97RWHP/370.07 RWTQ
Gains of 8.45 RWHP and 11.69RWTQ
I added a cheap "catch can' while I had the intake off, there was a lot of oil coating the inside of the intake;;
A 1/4" air compressor filter from Home Depot @ $11.97
2, 90° 1/4" npt fittings @ $3.84 ea
2, 1/4" npt to 3/8" tubing fittings @ $2.76 ea
2'+ of 3/8" fuel line hose @ $4.41 ea
4, hose clamps @ $0.59 ea
Total of $38.35
Barely 150 miles and oil in the plastic bowl already!
Thread Starter
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
I was told it was a Formato port job, I bought it used and the seller never verified who ported it.
cbrf4i1: Quick photos just now; homemade bracket from scrap aluminum stock painted flat black.
Last edited by haljensen; Mar 23, 2007 at 10:38 PM.
Melting Slicks
Joined: Mar 2006
Posts: 2,255
Likes: 3
From: Sugar Hill Georgia
Rather consistent gains from the porting, I picked up 7.2/11.1 with an intake port. 
http://forums.corvetteforum.com/show...3&postcount=11
http://forums.corvetteforum.com/show...3&postcount=11
Thread Starter
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
Thanks for the prop. When I saw how much oil was on the runners of the intake and pooled around the gaskets I had to do something. Was pretty easy with the intake manifold off, good access to the fitting on the valley cover. Almost scary that I have a 1/4" of oil in the plastic bowl in only 150 miles (w/2 Dyno pulls).
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Drifting
Joined: Jul 2000
Posts: 1,861
Likes: 1
From: Bremerton WA
St. Jude Donor '09
Good results!
Those gains are right in line with what a ported intake should yield. Mine produce similar results but the one you tested definitely is not from my hand. There's no way I'd ever let something with that much variation from port to port get out the door. I thought you made a typo on your original post
I've got dial calipers on the bench at all times and use them to make a standardized port entry that is very close to the size of the intended cylinder head. I'm all about making the intake right for the intended cylinder heads. Not just pushing product out the door.
Those gains are right in line with what a ported intake should yield. Mine produce similar results but the one you tested definitely is not from my hand. There's no way I'd ever let something with that much variation from port to port get out the door. I thought you made a typo on your original post
I've got dial calipers on the bench at all times and use them to make a standardized port entry that is very close to the size of the intended cylinder head. I'm all about making the intake right for the intended cylinder heads. Not just pushing product out the door.
Last edited by Cory@LS2PortWorks; Mar 24, 2007 at 01:26 AM.
Instructor
Joined: Jan 2007
Posts: 182
Likes: 0
Good results!
Those gains are right in line with what a ported intake should yield. Mine produce similar results but the one you tested definitely is not from my hand. There's no way I'd ever let something with that much variation from port to port get out the door. I thought you made a typo on your original post I've got dial calipers on the bench at all times and use them to make a standardized port entry that is very close to the size of the intended cylinder head. I'm all about making the intake right for the intended cylinder heads. Not just pushing product out the door.
Those gains are right in line with what a ported intake should yield. Mine produce similar results but the one you tested definitely is not from my hand. There's no way I'd ever let something with that much variation from port to port get out the door. I thought you made a typo on your original post
I've got dial calipers on the bench at all times and use them to make a standardized port entry that is very close to the size of the intended cylinder head. I'm all about making the intake right for the intended cylinder heads. Not just pushing product out the door.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Thanks for the prop. When I saw how much oil was on the runners of the intake and pooled around the gaskets I had to do something. Was pretty easy with the intake manifold off, good access to the fitting on the valley cover. Almost scary that I have a 1/4" of oil in the plastic bowl in only 150 miles (w/2 Dyno pulls).
there seems to be some correlation between how much oil gets sucked up (or captured via the main pcv line) and the presence or absence of a vent line catch can.
i have cans on each line and have captured (or would have burned), less than 1 (one) tablespoon after 900+ miles.
the 'stone' elements can become clogged after time, keep a good eye on it. i've got one on my vent line, however, i used a 1/16" drill bit and added five vent holes into the bottom of the 'stone'.
Pro
Joined: Feb 2006
Posts: 690
Likes: 0
From: VA
Just dyno'd today after installing a ported stock intake manifold on Sun. 3-18. Dynojet 248, SAE corrected, smoothing 5.
384.42 RWHP/381.76RWTQ
Previous dyno w/1 7/8" Dynatech headers, w/cats, Lingenfelter CAI,160° stat, CoW tune was;
375.97RWHP/370.07 RWTQ
Gains of 8.45 RWHP and 11.69RWTQ
!
384.42 RWHP/381.76RWTQ
Previous dyno w/1 7/8" Dynatech headers, w/cats, Lingenfelter CAI,160° stat, CoW tune was;
375.97RWHP/370.07 RWTQ
Gains of 8.45 RWHP and 11.69RWTQ
!
I made almost the same numbers on a dynojet 248 except I ported my intake myself and the headers are 1 3/4. Tune was by Jeff at CAM. see sig. Sounds like are cars are very similar.
Thread Starter
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
Great numbers man. It seems these LS2`s put down very close numbers w/ these mods. Others are seeing very close to what we have.
I made almost the same numbers on a dynojet 248 except I ported my intake myself and the headers are 1 3/4. Tune was by Jeff at CAM. see sig. Sounds like are cars are very similar.
I made almost the same numbers on a dynojet 248 except I ported my intake myself and the headers are 1 3/4. Tune was by Jeff at CAM. see sig. Sounds like are cars are very similar.
Sure would have liked 400RWHP/400RWTQ with what I've done but this will do.
Safety Car
Joined: May 2005
Posts: 3,990
Likes: 1
From: Corpus Christi Texas
Funny how the brand loyalty doesn't seem to make a difference to the final numbers. Headers w/cats, CAI, tune, 160° stat, ported intake regardless of who made the parts and how the tune was done. I'm happy with the manufacturers products I have and the results I have so far.
Sure would have liked 400RWHP/400RWTQ with what I've done but this will do.
Sure would have liked 400RWHP/400RWTQ with what I've done but this will do.
A FAST intake would get us there but there goes the stealth look though long-tubes via sound usually give away the car isn't quite stock. Though withe my new VR, I'm sure at speed, say above 50mph, I probably have over 400rwhp, just can't measure that on the dyno.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Please watch that stone - they clog. You might want to remove it, you don't need it. Or try what Zig did.
My buddy and I with the Campbell Hausfeld catch can mod both blew out our front seals on the road course, we think from clogged stones. If the PCV can't flow the pressure goes somewhere, in our case, our front seals. I'd hate for you to follow suit.
My buddy and I with the Campbell Hausfeld catch can mod both blew out our front seals on the road course, we think from clogged stones. If the PCV can't flow the pressure goes somewhere, in our case, our front seals. I'd hate for you to follow suit.
Pro
Joined: Feb 2006
Posts: 690
Likes: 0
From: VA
Funny how the brand loyalty doesn't seem to make a difference to the final numbers. Headers w/cats, CAI, tune, 160° stat, ported intake regardless of who made the parts and how the tune was done. I'm happy with the manufacturers products I have and the results I have so far.
Sure would have liked 400RWHP/400RWTQ with what I've done but this will do.
Sure would have liked 400RWHP/400RWTQ with what I've done but this will do.
Exactly!
Add rockers and a retune and I think both of us would be there, or 1 or 2 shy...
