Re: Engine Building-What Products?
 

The point you are missing is "Why are they different?"

They are different because the 2.4L belt is longer by one (1) more tooth to compensate for the taller (6mm) deck height of the 2.4L block. Not an even number such as 2 (two) teeth. All remarking the gear does is get you close, but the cams are still off by 1/2 tooth which equals 3-4 deg of timing. If the gears were stamped the same and marked the same they would line up the same, but they don't. That's why Mitsu makes a different gear for the 2.4L. Lining up the marks as close as possible still has the cam dowl pin out of position which is what times the cams.

I has to use Fidanza gears to get the adjustablility to correct the timing. When I degreed my cams (HKS 272's) in both were off by 3-4 deg because of the longer belt. I just remarked the cam gears..

Re: Engine Building-What Products?
 

Good explanation. But the fact remains that they made power with remarked stockers, and more importantly i'm out of money!

Re: Engine Building-What Products?
 

I wonder how off mine are then if the exhaust is an actual 2.4 gear and the intake is a remarked 2.0 gear?

Re: Engine Building-What Products?
 

I am getting aftermarket adjustable cams(I dont care what the cost diffference is!). Do I need to remark them and then add 3-4 degrees?

Re: Engine Building-What Products?
 

Just degree your cams so you are safe. Dont just make an adjustment based off the one tooth difference.

Re: Engine Building-What Products?
 

Degreeing is too much work. How about when you dyno you play around with them and get some hard numbers. Less work and instant results.

Re: Engine Building-What Products?
 

That is a great idea until your pistons and valves do a slow dance.
Dyno time isn't cheap, I"d degree the cams.
Floppy, is someone posting on your computer?

Most off the shelf grinds are just fine and close to perfect at 0,0 for a dsm.

Re: Engine Building-What Products?
 

That's the case now, but if someone's buying used cams from a few years back, the Crowers and some others were way off from the card. And that goes out the window for the 2.4's, or any motor that's been decked.

Re: Engine Building-What Products?
 

Well of course. That is why we degree cams on all the longblocks we put together, and tune all of our personal cars on the rollers with cam gears.
(yes my cam gears are adjusted, they aren't there for looks).

Re: Engine Building-What Products?
 

I was too lazy to degree my cams and just picked up some stocker 2.4 gears for the meantime. $50 in cam gears is just one less night out on the town, which ain't a bad thing anymore.

Re: Engine Building-What Products?
 

Heck yeah. It was a cheap solution and your car does make power. Now you know when you want to, you can go back to that aspect of your build and pick up the power that was potential left on the table.

Re: Engine Building-What Products?
 

Hey on the subject of engine building, what kind of piston to wall clearances do you guys run?

I talked to a lot of people and was told a range of things, so i pretty much averaged them and went with .004"

Re: Engine Building-What Products?
 

Run the loose side of what the piston manufacturer says.

Re: Engine Building-What Products?
 

I went .0035" on Wiseco's. They don't expand as much as most do.

Re: Engine Building-What Products?
 

I should have said what pistons i have; and those would be Wisecos as well.

Re: Engine Building-What Products?
 

.004 will be fine for a wiseco, this depends on piston type and what is planned for the motor.

~John