just tuned my dart 2.1 engine today with m24x.Dropped 4whp at the high end and lost bout 5-9whp t all other range,isit becos i don have enough compression.

 

Could be the cams need to be degreed...?

 

Can you post a graph/dyno sheet please

 

info?

 

tried to degree the cam but it does nothing.will try to post the graph but its a big dip for the m24x all the way till 7k.My current comp is about 12ish,85x95 dart block.

 

Did you put them to the recomended centerlines?

 

I would'nt consider your compression any factor in the cams performance of one vs another, an 85 x 95 moves a lot of air. What are the rest of the specs on you setup?

 

Your motor is large enough, thats not the problem

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">Did you put them to the recomended centerlines? </TD></TR></TABLE>

 

I'm using a 4-1 extractor with 3" exhaust straight through,victor x mani and 68mmtb,so what could be the problem?Cam was set according to cam spec provided by rokect.Tried to ad exhaust and retart intake but it does'nt seems to do anygood.Is it because of the head?

 

what do you mean you "tried" to set to the specs according to rocket? Either you did or you didnt... there is no "try". (hehe)

 

FYI, setting the cam gears at 0,0 does not qualify as degreeing the cams, if that is what you are thinking.

 

I would degree the cams and get a bigger throttle body..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">there is no "try". </TD></TR></TABLE>
Wax on Wax off!

 

Cam was set to spec provided by rocket,didnt gain any and lost power throughout the range,tried to degree the cams at the dyno and it didn't get any better.get the pict?

 

List the specs you degreed them to.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by saintspall &raquo;</TD></TR><TR><TD CLASS="quote">Cam was set to spec provided by rocket,didnt gain any and lost power throughout the range,tried to degree the cams at the dyno and it didn't get any better.get the pict?</TD></TR></TABLE>

You dont degree cams on a dyno, you do it on an engine stand. Get the picT?

 

i think he meant he adjusted the adjustable camgears on the dyno..

but Combustion Contraption is right u need to degree the cams according to the spec given (on the engine stand).. for example the intake valve must start to open (usually 1mm lift) at certain recommended crankshaft degree and this must match with the cam spec given.

 

Well ya i adjusted the cam on an dyno and degree the cam with the engine off the car and was set according to given spec.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">List the specs you degreed them to.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">Did you put them to the recomended centerlines? </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">Could be the cams need to be degreed...?</TD></TR></TABLE>

WHAT WERE THE SPECS YOU DEGREED THEM TO?