OmegaRenegade
Vendor
So after much reading and the fact that my timing belt was due - I decided to upgrade my cam from stock to a Stage 2 Colt Cam.
Geoff at colt cam's advertises this regrind at +10-15hp and about 25-40tq which on our small displacement low hp engines is a pretty decent bump in power. It also would correct the factory flaw in the design of the PD Cam's. To me this was a win win situation when coupled with the fact that my timing belt was due.
Geoff is a very easy to work with, very knowledgeable guy who definatley aims to please his customers. To anyone contemplating doing this upgrade who has more questions then can find answers for on this forum, he welcomes you to call.
Here are the specs of my car prior to the cam:
PD130 ASZ motor
VNT17/22 boosting 26PSI
2.5" Passenger Performance turbo back exhaust
Eurojet Upgraded Side Mount Intercooler
2" Intercooler piping all the way through
PD150 Intake Manifold and Turbo Inlet Pipe
and
Engine Tuning by Mark Malone
The dyno we used indicates Whp not Bhp. I know nothing of the workings of how this dyno calculates horsepower or torque i figure if i used the same dyno both times it'd at least be consistent. Others in our area have used this dyno and numbers seem to be pretty consistent to what expected power output is suppose to be.
and the after dyno
The only things that changed from the before and after dyno where the Cam, cam bearings, lifters, timing belt, and oil. Everything else remained constant. The ambient temperature on the "after" dyno was about 12*C then the before but i really dont see that making much of a difference. This is just a drop in before and after comparison - i haven't let Mark begin to tweak the ECU for the new cam at all.
Things to note after doing this:
Car runs a heck of a lot quieter
Car appears to drives a lot smoother
The cam adds a bit of fuel by dropping it in
The before dyno EGT's hit 1500*F peak with NO smoke output
The after dyno EGT's hit 1650*F peak with a slight haze of smoke.
I'm slightly disappointed that i didnt break the 200whp mark but for the build of motor i have and the level of smoke output, I realize its a pretty decent feat. An upgraded cam with a mild turbo upgrade and no software modifications yielded about 10hp and 20tq. I figure with some fine tuning on Marks part, we should be able to squeeze another 5hp and some more torque.
When you factor in the price for all the replacement parts to install this cam it is by no means a "cheap" upgrade, however for a person with a questionable cam, it would be an ideal and nice upgrade to your motor. Total cost for this upgrade was ~$900 in parts and then you still have to add the cost of the timing belt.
After some fine tuning i'll jump on the rollers again to see what kind of improvement we've made. Will be a few weeks at least before that happens. Hopefully this time i'll have the battery charged in my camera for some video of the dyno runs too.
Geoff at colt cam's advertises this regrind at +10-15hp and about 25-40tq which on our small displacement low hp engines is a pretty decent bump in power. It also would correct the factory flaw in the design of the PD Cam's. To me this was a win win situation when coupled with the fact that my timing belt was due.
Geoff is a very easy to work with, very knowledgeable guy who definatley aims to please his customers. To anyone contemplating doing this upgrade who has more questions then can find answers for on this forum, he welcomes you to call.
Here are the specs of my car prior to the cam:
PD130 ASZ motor
VNT17/22 boosting 26PSI
2.5" Passenger Performance turbo back exhaust
Eurojet Upgraded Side Mount Intercooler
2" Intercooler piping all the way through
PD150 Intake Manifold and Turbo Inlet Pipe
and
Engine Tuning by Mark Malone
The dyno we used indicates Whp not Bhp. I know nothing of the workings of how this dyno calculates horsepower or torque i figure if i used the same dyno both times it'd at least be consistent. Others in our area have used this dyno and numbers seem to be pretty consistent to what expected power output is suppose to be.
and the after dyno
The only things that changed from the before and after dyno where the Cam, cam bearings, lifters, timing belt, and oil. Everything else remained constant. The ambient temperature on the "after" dyno was about 12*C then the before but i really dont see that making much of a difference. This is just a drop in before and after comparison - i haven't let Mark begin to tweak the ECU for the new cam at all.
Things to note after doing this:
Car runs a heck of a lot quieter
Car appears to drives a lot smoother
The cam adds a bit of fuel by dropping it in
The before dyno EGT's hit 1500*F peak with NO smoke output
The after dyno EGT's hit 1650*F peak with a slight haze of smoke.
I'm slightly disappointed that i didnt break the 200whp mark but for the build of motor i have and the level of smoke output, I realize its a pretty decent feat. An upgraded cam with a mild turbo upgrade and no software modifications yielded about 10hp and 20tq. I figure with some fine tuning on Marks part, we should be able to squeeze another 5hp and some more torque.
When you factor in the price for all the replacement parts to install this cam it is by no means a "cheap" upgrade, however for a person with a questionable cam, it would be an ideal and nice upgrade to your motor. Total cost for this upgrade was ~$900 in parts and then you still have to add the cost of the timing belt.
After some fine tuning i'll jump on the rollers again to see what kind of improvement we've made. Will be a few weeks at least before that happens. Hopefully this time i'll have the battery charged in my camera for some video of the dyno runs too.
Last edited:
) I, too, am interested in seeing some results from an ALH cam.
