i am going to swap the si tranny into my hf. I have the si engine but I am getting it built up. since the si tranny shifts the power to higher rpm would putting the si ecu in the car allow it to rev to 7200rpm or would it still not have the power to go that high? ive had the hf engine/tranny with the si ecu rev to 7200rpm before but it was completly random and I could never figure out why it would only sometimes go to the si rev limit.

Also putting a performance clutch and flywheel obviously will have better acceleration and pickup right?

 

the d15b6 makes power peak power at like 3-4k y would u run it any higher than 5k? and puttin the si tranny on the hf engine i personally dont see a problem there cuz thats what i was goin to do with my freinds hf cuz it was way too slow.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrxHf-Rider &raquo;</TD></TR><TR><TD CLASS="quote">i am going to swap the si tranny into my hf. I have the si engine but I am getting it built up. since the si tranny shifts the power to higher rpm would putting the si ecu in the car allow it to rev to 7200rpm or would it still not have the power to go that high? ive had the hf engine/tranny with the si ecu rev to 7200rpm before but it was completly random and I could never figure out why it would only sometimes go to the si rev limit.

Also putting a performance clutch and flywheel obviously will have better acceleration and pickup right?</TD></TR></TABLE>

Revving an engine made to peak out at 5500rpm go to 7200, not good. I hope you have your D16A6 back soon cause that puppy won't last.

The springs in the head where not made to go that high, and will more then likely fail on a worn out motor. I wouldn't bother putting anything on the HF motor for now. Wait till the A6 shows up.

 

ive done that they dont rev after that they just smoke and feel like rev limit at about 6or so
valve float yhaha

 

with only 2 valves per cylinder they just won't flow at a higher rpm.