sr adjustable gears?

[lucas240sx]

hey guys
i will doing some research tonight
but i was wondering
which gears would be a better choice?
jwt or greddy?

i have the jwt already but found some greddys for around 100(same privce i paid for the jwt)

ive read the jwt have 2 1/2 adjustablity?
whats the greddys?

i havent got any cams yet....but when im ready...im looking to upgrade to 264

i hope to gets some good info
thx guys

[codyace]

The JWT ones are failsafe, that is, they will never ever slip, and your timing is defined incrementally.

THe Greddy ones have 'finer' adjustment, but nothing that you'd not gain anyway out of the adjustments JWT would give you.

In the end either will work, but the JWT or Custom Steel ones would help me sleep better just in the event they came loose (with a Stillen or Greddy style)

[lucas240sx]

codyace......to me it always seems your the guy that knows everything....thank you
i think ill just pm you with any question i have lol
thx again

ive read that bc cams need the help of gears
is the true?

[jr_ss]

Not to get off topic, but what makes the JWT failsafe vs. Tomei, Greddy, HKS, etc?

[codyace]

Not to get off topic, but what makes the JWT failsafe vs. Tomei, Greddy, HKS, etc?

No chance for slider bolts to come loose, as it utilizes the cam's dowel pin (just like oem). I know first hand of many DSM owners who have had gears slide after abuse.

[Howie Felter Snatch]

^ Someone needs to give this guy a fucking cookie

[Kingtal0n]

my question would be why are you using cam gears? and how do you intend to set them correctly? Are you going to use a dial indicator on the camshaft and degree the overlap to some per-specified number?

Or do you plan on doing back to back dyno runs at various settings looking for the "magic numbers"?

[lucas240sx]

I really dont have a clue
I really dont know what the process is

Im still waiting to find a good deal on some cams...Im no hurry atm...the motor is in the machine shop atm

So how shoul i go about using cam gears?

[jr_ss]

If you have a completely stock motor, get some JWT, tomei cams and be done with it. Save yourself some money and use the factory gears. There is absolutely no reason for you to be using them if you're upgrading cams to one of the stated manufactures above in a completely stock motor.

Cam gears are generally used to re-align cam center lines and get a motor back to true TDC. However, people do use them to advance and retard their cams to get the best possible combination for maximum HP. If you don't know what you're doing you can royally fuck yourself. I'd leave them alone or take it to a shop that knows what they are doing and can set them up correctly.

[codyace]

If you have a completely stock motor, get some JWT, tomei cams and be done with it. Save yourself some money and use the factory gears. There is absolutely no reason for you to be using them if you're upgrading cams to one of the stated manufactures above in a completely stock motor.

Cam gears are generally used to re-align cam center lines and get a motor back to true TDC. However, people do use them to advance and retard their cams to get the best possible combination for maximum HP. If you don't know what you're doing you can royally fuck yourself. I'd leave them alone or take it to a shop that knows what they are doing and can set them up correctly.

Atop of that, if these are being used to actually degree the cams, that would involve the end user also creating a mechanical lifter/solid lifter in order to properly degree them with precise open/close moments....and I can assure you that the number of properly degreed SR20 engines is 1% (realistically probably lower, I'd say more would be found in the FWD crowd then the RWD crowd where N/A cars are more common).

However with that all considered, If the end user is set on having adjustments made, that I'd look for a used set of 'slidable' ones to use on the dyno session, and once the powerband of desire is found, to take them out, and install JWT or Custom Steel brand ones that mechanically lock them using the dowel (which is common).

With that said, Finding any decent 'cam' specs (or standard ones at best) for the SR20 is about impossible. It seems like measured lift/duration are never at the same spot (such as .050 for all domestic engine based cams) so to say a 260/11.3 lift cam is little compared to a 264/11.2 lift cam may be untrue, especialyl depending on where they were measured

[lucas240sx]

Thank you to both of yall....
Have given me a ton of info
Im installing cp pistons and manley rods
Im not in a hurry to upgrade the cams yet....but ill hold that stuff off untill im completely sure what i want to do
Again thank you for yalls educated input