I have spent an hour or two figuring how to use evo cams in dsm. It can be done quite easy with cam card, adjustable gears and a cam degree session.(or so I thought) But I wanted to make the swap easier so I tried to figure out easier way.. The degree difference is in the angle the valves sit in the head. The best I can measure that angle is ~28 degrees. But since the intake cam is opposite angle of exhaust cam the total difference when you swap is ~56 degrees. Since each tooth 7.5 degrees moving the gear 7 tooth yields 52.5 degrees. and moving it 8 teeth moves it 60 degrees. one is 3.5 off and the other is 4.0 off. But they move in opposite directions. so they would be like 3.75 advanced and 3.75 retarded. and since the timing is not adjustable on an evo the timing is moved at the same time. I didnt try to figure out how far the timing moves. I realized you would have to regrind slot for timing sensor to make conversion complete. at that point I figured it was best to not try to use evo cams in a dsm. and my headache went away. This is why you have not seen a thread on someone successfully using evo cam in dsm or visa versa. Its far more complicated than just using adjustable cam gears. So actually Dave and TTP are both guessing at how far degrees is off when you use DSM gears on a evo cam. Doesnt really matter. The moral of story is dont do it!

 

Dave, thanks for tuning Tara's car. It's an absolute rocket ship.


This is the build thread...

https://www.evolutionm.net/forums/ev...od-thread.html


The car was bought with a mix of parts on it.

It was pushing coolant, I found the HG was leaking and figured to fix it right with an O ringed head and L19's. This is Evogirlie8's car, I just did the work.


I added

Buschur stage 3 head,
kelfords,
stock cam gears,
L19's,
FP oil feed line,
12 tooth trigger,
80mm Red,
1200cc,
double pump

I didn't change the intercooler piping, was going to but ended up not. The lower is AMS. The intake is PPI ported and 65mm Throttle body.

I went from HKS to stock cam gears, HKS only has one hole, I lined it up with a stock DSM gear and it looked the same.

Then I went on slowboy racings web site and checked if the part number for a aftermarket cam gear was the same for an Evo and a DSM. It was so I installed the DSM cam gears.

The cam gears are vary similar and you cant see the difference unless you have both right in front of you. The aftermarket cam gears fit both car's because they have 2 different dowel pin holes. Stupid mistake, but it was an easy fix and nothing was hurt. DSM hole is 12 o'clock and the EVO is like 11:45

If you don't want to check the other thread, this is how the car came. I believe it's compression is 9:1, not sure.

Switzer built head
Crower rods
Wiseco Severe Duty Pistons
HKS 272 cams
HKS adjustable cam gears
ARP rod bolts
ARP head bolts
AMS FMIC
AMS LICP
PPI ported intake
PPI ported Megan racing SS o2 housing
PPI 65mm Throttle body
Switzer ported Forced Performance 20GLT "GREEN" turbo w/ HD waste gate actuator
Switzer ported stock exhaust manifold
Switzer custom intake
Switzer Catch can
Hallman PRO Manual boost controller
Tial 38mm BOV
JUNBL turbo back exhaust

Ignition/Fuel
HKS DLI Ignition
1000CC Injectors
AEM EMS

 

I believe based on the cam gear alone, using an EVO cam in the engine as it is suppose to be and just installing DSM cam gears the difference is about 7 degrees like I had said. We put the two sets of cam gears, as they would be installed together and it appears as though it's 2 teeth difference, which is about 7 degrees.

 

dont retard those cams too far.... causes major detonation! aint that right david. LOL

 

FYI this is my car and i just wanted to say thank you David for everything - my mechanic who brought the car down to you and agreed we wouldn't let anyone else handle the tune \

THe car will be en route to Texas next weekend - it's new home

 

evogirlie8, you are welcome, I hope you enjoy the car and you are very happy with it. I am told its very fast! I'm not saying this because you are a girl................be careful in it.

Enjoy.

 

Thanks