cam questions

[vmason]

I have just purchased a 1995 eagle talon tsi awd this past weekend (project car). The engine is out of the car I was inspecting the cams. I found out that were the cam gear is placed the point that holds the cam is slightly bent. As never working on a 4g63 before I am not sure if this is a normal problem, a fixable problem or if I need new cams. Any help provided would be greatly apreceated. If I do need new cams if anyone knows were a less expensive place to purchase cams at the insight would be greatly appreciated. The pictures attached is what the cam looks like prefer to find out whats wrong sooner then latter to get this build started thanks for reading.

 

[Archer Fabrications]

I have just purchased a 1995 eagle talon tsi awd this past weekend (project car). The engine is out of the car I was inspecting the cams. I found out that were the cam gear is placed the point that holds the cam is slightly bent. As never working on a 4g63 before I am not sure if this is a normal problem, a fixable problem or if I need new cams. Any help provided would be greatly apreceated. If I do need new cams if anyone knows were a less expensive place to purchase cams at the insight would be greatly appreciated. The pictures attached is what the cam looks like prefer to find out whats wrong sooner then latter to get this build started thanks for reading.

Are they stock cams? I habe 6bolt cams

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[95gstnate]

If it was mine I personally wouldn't run it. There are usually quite a few cams on the classifieds for sale from stock to wild. I bought my set of 272 hks cams off the classifieds and they have been just fine for me.

 

[vmason]

Yes these are the stock cams. So if I buy an after market is it recommended to change the gears and rockers or it dosent make adiffrence.

 

[Dan_619]

The major issue you would run into with a "bigger cam"; you will want to address is: a stiffer spring plus retaining clips suitable for the stronger spring. Then the valve adjustment. And yes people do change the O.E.M cam gears to adjustable so they can manipulate valve overlap. The big issue with that is if the cam gears slip.(which isn't often but, I have heard of such i.e bent valves). Also adjustable cam gears will let you "degree" the motor. This was big because it you have a milled head etc. for whatever reason then you can "degree so you know top dead center.
I usually change lifters because I run into it a lot the dreaded lifter tick. Which is annoying and in some instances can be detrimental to the cams. So to be rid of that knew lifters if possible.

 

[that408gsx95]

Sorry for posting what might be a silly question for most and also for asking a question on someone else's thread..... I notice a lot of people are using the hks . 272 but bigger sizes r available what does that number (272) represent . Is this like the perfect size not too big not too small or ????

 

[Phantom DSM]

Sorry for posting what might be a silly question for most and also for asking a question on someone else's thread..... I notice a lot of people are using the hks . 272 but bigger sizes r available what does that number (272) represent . Is this like the perfect size not too big not too small or ????

The 272 is the advertised duration of the cam in crankshaft degrees that the cam follower is lifted from an amount in mm or in off its seat. The duration is advertised at a determined lift,but for example at .050" the duration will be at a certain degree. DKS 280 cams from FFWD for example are rated at .050" lift duration is 203 crank degrees. I hope i didnt word this confusing but there is more to this by lobe separation angle and valve overlap.
By increasing duration, you keep the valve open longer..which increases high rpm power. there is more to this and some adjustability can be made for desired results and tuning. By using a 272 you will have less low end power, but your power range will increase towards the higher end. Every motorand turbo setup is different, there is no perfect cam setup. Some people do 264intake/272exhaust combo for streetability or good idle for example. You can have272/272 combo on a well prepped and tuned car and you cant tell the difference sometimes. This is only brief, im sure more qualified members can chime in.

 

[FirstCarIsA GSX]

The major issue you would run into with a "bigger cam"; you will want to address is: a stiffer spring plus retaining clips suitable for the stronger spring. Then the valve adjustment. And yes people do change the O.E.M cam gears to adjustable so they can manipulate valve overlap. The big issue with that is if the cam gears slip.(which isn't often but, I have heard of such i.e bent valves). Also adjustable cam gears will let you "degree" the motor. This was big because it you have a milled head etc. for whatever reason then you can "degree so you know top dead center.
I usually change lifters because I run into it a lot the dreaded lifter tick. Which is annoying and in some instances can be detrimental to the cams. So to be rid of that knew lifters if possible.

Yes although a lot of the the "bigger cams" do require upgraded valve springs, the Hks 272's were designed to run fine with a completely stock valvetrain. Like many dsmer's on here I am currently running the Hks 272's in a completely stock 2g head without any issues.

 

[vmason]

So if I understand this correctly if I run 272 cams it will require little to no modification and not cause lifter noise?

 

[dj1263]

good information everyone, thought you had to have upgraded valve train as well

 

[WES_393]

So if I understand this correctly if I run 272 cams it will require little to no modification and not cause lifter noise?

Like mentioned, it depends on the cams. An HKS 272 is very different from a Kelford 272 in terms of overall profile. With a "mild" 272 cam such as HKS/DKS or BC, you can usually get away with stock springs. But if you plan to rev high, or run a more aggressive cam, you'll need stiffer springs.

Also, cams have nothing to do with lifter noise. That's a problem with the lash adjusters (lifters) themselves.

 

[nitrouskris]

Without getting into a pissing match about cams... best cams JUN - not cheap second HKS

Before anyone post anything diff check out QW aka crco info on them. and yes I have seen the AMS cam shootout. - and the story about it

Been in the DSM game from 1989 and I have seen them all.

 

[Phantom DSM]

Without getting into a pissing match about cams... best cams JUN - not cheap second HKS

Before anyone post anything diff check out QW aka crco info on them. and yes I have seen the AMS cam shootout. - and the story about it

Been in the DSM game from 1989 and I have seen them all.

Over $1,500 for the stage 2 solid set on Jun....DAMN ! no kidding not cheap
JUN Auto Performance Camshaft Kits from Upgrade Motoring

What about the Magnus spec alcohol camshaft, just curious who makes the grind nitrouskris

 

[pacn91]

in regards to the question about the pin, i could be wrong, but it probably isnt bent. Those pins should be removable. atleast, any of the cams that have ever messed with they were removable. try it and see if they come out.

 

[nitrouskris]

Over $1,500 for the stage 2 solid set on Jun....DAMN ! no kidding not cheap
JUN Auto Performance Camshaft Kits from Upgrade Motoring

What about the Magnus spec alcohol camshaft, just curious who makes the grind nitrouskris

If I remember right Crane did and JUN cams are $360.00 each plus shipping from japan. just got a set in 2 weeks ago

 

[Phantom DSM]

If I remember right Crane did and JUN cams are $360.00 each plus shipping from japan. just got a set in 2 weeks ago

Crane huh damn and r&r for their rods, nice work either way.
Your right on the jun, u,s, suppliers raising the prices due to u.s. dollar value dropping versus the yen.
I checked out Jun s website and between 31,600 to33,600 yen = $310 to 330 each plus shipping im assuming.JUN AUTO - JUN HIGH LIFT CAMSHAFTS and Kit - MITSUBISHI 4G63 Definitly need upgraded springs and retainers for these badboys.