Uprevtuning

I have a Kinetics Velocity intake manifold and dont really feel any gains. Some people say they lost HP. Any one know more about it? I'm fixing to go back factory with spacer.

2bad240

iTrader: (6)

Rev harder.

FOOKhonda

iTrader: (1)

It was made to show better gains with FI it will be better than the stock manifold if you have FI.
If you don't have FI chances are you will show a loss of hp.

terrasmak

iTrader: (8)

It's made to rev, what is your limiter at, what cams are you running , what headers , and what tune. A lot of factors in making something properly work.

iideadeyeii

iTrader: (6)

I'll trade you a kinetix v+ plenum for it

Shin Beats

iTrader: (7)

Gotta rev to at least 7200.

dkmura

iTrader: (64)

Unless you have baseline data and pull a few dyno runs, you can never be sure of any gains/losses. Five to ten hp gains at the upper rev range are hard to quantify with a butt dyno.

jr27

is this the one that eliminates the upper and lower stock plenums or is this the black one that only replaces the top plenum? im really considering buying the nice polished one that has the slots that bolt up directly onto the manifold eliminating the top and lower plenums but ill stay away if it doesnt give noticable gains.

iideadeyeii

iTrader: (6)

He's talking about the one that replaced bottom/top

Uprevtuning

I am reving to 7300. I have Manley H beam Rods, CP high compression pistions, 280 duration Tomie cams, ARP head studs, Cometic HG, Race main bearings, Stage 2 clutch... Pretty much full build. Full exhaust, headers, intake ect..

thekyledeg

iTrader: (1)

then rev to 8k guy, your not seeing gains cause your cam choice must be revved to make power.

dkmura

iTrader: (64)

With a full build like this, I'd expect you have at least a few dyno runs to use as a baseline. Again, without a dyno run on the Kinetix, how can you quantify any sort of gain (or loss)?

terrasmak

iTrader: (8)

Probably needs some tuning work on a dyno too.

phunk2

do not rev a DE to 8000 rpm. That is, unless you enjoy exploding oil pumps and engine rebuilds.

The kinetic manifold has long runners, at least as long as stock if not longer. Plenum displacement is probably similar or less. It has uneven runner design, no velocity stacks or any other attempt to smooth airflow entry. It has straight tubular runners with no taper to increase velocity.

There is nothing about that manifold that indicates it will be a performer at higher RPM, or a performer at all.

Although, it is clearly superior to running a carburetor on top of a plenumless manifold... so we can at least sleep easy about that.

thekyledeg

iTrader: (1)

lol wut, adam from z1 has been revving his DE to 8400 for a few years now on a rev up oil pump. With a build like this, unless he didnt use arp con-rod bolts hed be fine revving higher as long as his valvetrain has been upgraded (assuming it would've had to at least had springs for that cam)

phunk2

Nah... If he personally comes in here and says that he has done that and done that regularly and consistently, I would have to take his word for it and believe it. And in that case, it would make him the only one to get away with it.

But coming second hand, I will assume that its been an occasional thing. The oil pump has been one of the major weaknesses of the VQ since 03, and continues to this day to be something that has to be replaced with a dry sump on any serious effort NA engine.

DarkZ03

iTrader: (11)

What headers, exhaust and intake do you have?

1cockyZ

iTrader: (46)

There is a thread in NA Builds that answers this question that I started. On 3 different cars this manifold has shown to:
1. Make more torque almost everywhere
2. Loose very little power or none at all between 6200-6500(like 2-3whp if that)
3. Make more power from 6500-to the end.

Tuning is required. Somebody needs to build a modular plenum with adjustable volume and runner length to suit anything from bolt ons to a fully built big cammed setup.

phunk2

I would suspect that any gains associated are the product of tuning rather than the manifold.

Although some torque could make sense with the very long runners, smallish plenum, etc. It is sort of a torquey truck-ish spec'd manifold.

1cockyZ

iTrader: (46)

Previous setup was dyno tuned and then retuned for new manifold by the same people on the same dyno. I do agree the plenum could be bigger and the pipe from tb to main plenum larger but it works as is.