Thread: High Comp 16VE Headswap Motor Dyno'd

Very good numbers..!!!
What modifications you made to the pistons to avoid the compression goes too high? (these days i wait my motor too..exactly the same and i shaved them 1,1mm srom the top)
What about N1 cams,do you measured if you will have any clearance issue?
Is the DE pump big enought for such rpm's??

Our UK 99 RON.



The SR16VE pistons are untouched so compression is around 13.7:1 i believe.


I'm using regular 16VE cams (Non N1), but there are no issues with P2V clearance with either of these cams.

Also, I'm not doubting that the VE oil pump is better but I dont expect to have any issues running a DE oil pump.

Reasons:
-I dont have piston oil squirters or an oil cooler.
-I am only revving to 8,000rpm.
-The DE pump copes fine on a DE, so shoudlnt have a problem on a VE head at low RPM/idle.
-The DE pump provides sufficient oil pressure at higher RPM to lubricate the motor and cater for the high lobe activation.
-My rod bearings were in immaculate condition after 80K miles.

Excuses:
-Keeping the DE oil pump means one less thing to possibly leak.
-All the engine work was done with the engine still in the car.

Hopefully the next update should contain some new times from the track.
Happy VTECing!

nice car bro...

Good work! Nice gains over DE setup.

What is spec of the header - primaries length? Porting on head/intake? Exhaust diameter? Thanks

Nice numbers!!! That setup should be over 220whp on a dynojet... awesome!!

Jagy, pics on the header are in my DE thread here: http://www.sr20-forum.com/all-motor/38818-autech-gti-sr20de-updates-7.html

Its a shortened Mazworx header with smaller choke section, around 26-28" primary length.

The head is bone stock, just a light clean up on the intake manifold to remove the casting marks and step between the plenum section and lower runners, head has been refaced to ensure a good seal.

Exhaust is 3" diameter after the header.

This is the graph of the DE (blue) vs the VE head (red) :

cams at 4500?

nice. Loving the progress on your car.

Any dyno overlay of the torque graphs between the DE and the VE setup?

that's great that it runs so well on pump fuel with the high comp ratio

when's the next outing to the strip?

In the first post mate, Intake 4000rpm, exhaust 4500rpm.




Yeah, you can see the Blue (VE) and yellow (DE) torque curves on this graph.

This is a comparison of WHP, Crank HP and Torque between my DE and VE.



22nd July.

You have a PM.