Hks Step1 Cams For Gtr

[Midnight Racer]

i know step1 cams can install without any head work, but do not know does it need to adjustable or just put in is ok??

[Beer Baron]

you don't need the adjustable gears to install it but they are a good idea and are usefull in tuning the engine.

[Amaru]

i know step1 cams can install without any head work, but do not know does it need to adjustable or just put in is ok??

<{POST_SNAPBACK}>

If its a GTR you will need too (ok, well you dont need to, but its adviseable to) remove the shims from the head and measure them up for wear. Most of them will be worn and you will probably need to replace them with a new set. 24 new shims is around $240 - $250.

[Mik]

If its a GTR you will need too (ok, well you dont need to, but its adviseable to) remove the shims from the head and measure them up for wear. Most of them will be worn and you will probably need to replace them with a new set. 24 new shims is around $240 - $250.

<{POST_SNAPBACK}>

Why would you need to do that? The HKS step 1 cams run a std base circle and if anything, the old cams would be a little worn, so the valve clearances will actually get smaller with the new cams.

[Amaru]

Why would you need to do that? The HKS step 1 cams run a std base circle and if anything, the old cams would be a little worn, so the valve clearances will actually get smaller with the new cams.

<{POST_SNAPBACK}>

In theory they should "bolt in" same as the poncams. I put a set of poncams in mine and because of shim wear, things wernt 100%.

As I said in my post, you dont -need- to but many engine builders and mechanics I have spoken to have said it is adviseable too do it.

[Midnight Racer]

thanks for information, can i replace hks step 1 cams by myself??

what other things i should take care??

[wrxhoon]

thanks for information, can i replace hks step 1 cams  by myself??

what other things i should take care??

<{POST_SNAPBACK}>

Make sure you don't brake them when you are instaling them , check the clearances and if not within specs you have to reset them ( very slow and expensive exersize for you ) but they should be right .

I take it you are talking about and rb 26 and you have some experience , if you dont be very careful and follow the workshop manual .

[The Alchemist]

I did my cams with Tomei POncans......almost all the shims needed changing. Takes ages to do as you have to measure all the clearances, then remove the cams, measure the shims, calculate the new shim size thru simple mathmatics, get new shims and install under buckets, reinstall cams and check clearances again and hope they are all within spec. Assemble rest of engine.

Results , once the adj gears where set up, was dramatic with an extra 25rwkw and a 15% increase in midrange torque and boost arriving at 14psi at 3400rpm.....500rpm earlier! Figures off my own dyno dynamics dyno at the workshop so no creative dyno figures, I'd only be cheating myself!

Sure you don't have to redo the shims if the clearences are within spec and 'hey', we all live in a perfect world eh?