Typhoon 85mm manifold &TB dyno: final results
04-28-2007, 10:01 AM
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Typhoon 85mm manifold &TB dyno: final results Here are my results. First pull is the baseline, pre heads. Second pull is after the heads, with stock LS1 78mm manifold/TB, without tune. Final is after the 85mm manifold, TB and tune. Looks like its a wash, but I did pick up some in the low-mid ranges, but probably attributed to the tune.
Obviously no gains, and if you consider the tuner picked up about 10 whp, you may even say it lost power. In monitoring the readings on the dyno the tuner indicated there was vaccum still present. I attribute that to the runners in the manifold, they are pretty rough and no polishing was done. Also, I went with a gasket set by Holley, which unless they are precisely aligned, could partially block off some of the ports. The alignment is not easy, it could be a contributing factor.
Next up, pull the manifold and polish the intake runners and try a different brand of gaskets and better ensure alignment with a sticky spray.
A better readable dynosheet is at: http://www.ccgto.com/Dan_E/Dyno.jpg
Here is how it looks mounted:
Obviously no gains, and if you consider the tuner picked up about 10 whp, you may even say it lost power. In monitoring the readings on the dyno the tuner indicated there was vaccum still present. I attribute that to the runners in the manifold, they are pretty rough and no polishing was done. Also, I went with a gasket set by Holley, which unless they are precisely aligned, could partially block off some of the ports. The alignment is not easy, it could be a contributing factor.
Next up, pull the manifold and polish the intake runners and try a different brand of gaskets and better ensure alignment with a sticky spray.
A better readable dynosheet is at: http://www.ccgto.com/Dan_E/Dyno.jpg
Here is how it looks mounted:
Last edited by dan_e; 04-28-2007 at 12:12 PM.
04-29-2007, 08:39 AM
#6
Polishing the intake runners really won't do a thing for you. Air doesn't actually move over the surface, there's a boundary layer of air molecules that "sticks" to the surface and the airflow moves over that. I wouldn't waste my time polishing the runners as it may only gain you 1-2 hp and for the amount of work involved, it's not worth it. This goes to show that these intakes are not living up to their claims in real world testing, which sucks. The Mustang guys have the same issues with their intake for the 4.6 SOHC engines.
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05-31-2007, 05:34 PM
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both versions of the graph are hard to read...could you just retype the numbers for us? thanks.
sucks that you didn't pick up much.
what was the headwork that you had done? stock cam?
sucks that you didn't pick up much.
what was the headwork that you had done? stock cam?
05-31-2007, 09:01 PM
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Originally Posted by 5_02ls1
word of advice to ya...GLUE THE GASKETS TO THE HEAD...
it will save you alot of hassle and worry....
it will save you alot of hassle and worry....
06-01-2007, 10:10 AM
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you used too much glue...a little dab on each end of the gaskets will hold it in place...actually holley clearly states in the instructions to glue the gaskets...im an engine builder and there is no way you can get those gaskets lined up perfect without gluing them to the head,,,but what would i know...
06-08-2007, 11:32 AM
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Originally Posted by 5_02ls1
you used too much glue...a little dab on each end of the gaskets will hold it in place...actually holley clearly states in the instructions to glue the gaskets...im an engine builder and there is no way you can get those gaskets lined up perfect without gluing them to the head,,,but what would i know...
06-08-2007, 11:35 AM
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Originally Posted by teke184
both versions of the graph are hard to read...could you just retype the numbers for us? thanks.
sucks that you didn't pick up much.
what was the headwork that you had done? stock cam?
sucks that you didn't pick up much.
what was the headwork that you had done? stock cam?
The gains in the lower ends between dyno #2 and #3 are most likely attributed to the tune that happened after install. It was a noticeable on the dyno screen while on the rollers.
06-08-2007, 11:38 AM
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Originally Posted by CMcCarthy
What were the weather conditions on the different test days?
64.8 degrees
Baro press 30.44
Vapor .034
Dyno #3
74.8 degrees
Baro press 29.79
Vapor .13