?'s on some cams..help me out dee

[tnslide80]

im gunna be buying tomei cams with these specs 270 duration?‹ 8.80 mm lift.would you suggest running anything other than springs and retainers.....and is there any other place where i can get good quality springs cheaper than tomei???my head is getting ported and polishednow so i need to figure this stuff out fairly quickso i can get it on order..thanks

[float_6969]

you'll need cam gears to dial the cams in properly.

[tnslide80]

yeah but as far as the internals just spings aught to do it huh??this project is quickly becoming a money pit and i don't want anything coming apart on me...so im just trying to find out what will do as far as supporting these cams

[r34 gtr]

Springs and youll be fine. You probably dont even need them, but if you have the money you might as well.

[boost_boy]

im gunna be buying tomei cams with these specs 270 duration?‹ 8.80 mm lift.would you suggest running anything other than springs and retainers.....and is there any other place where i can get good quality springs cheaper than tomei???my head is getting ported and polishednow so i need to figure this stuff out fairly quickso i can get it on order..thanks

You'll need to get some heavy duty valve springs and some can be found at Jim Wolf Technology for a little over $200. To be on the safe side have your valve reliefs on your pistons enlarged (good insurance). As float suggests, a set of adjustable cam gears will be a useful tool as well. With all that being said, follow these tips andyour new head and goodies should net you some good power and performance, granted the car is tuned correctly.

Dee

[tnslide80]

would you suggest any other cams or go with tomei???they are about the only ones ive found....but i do trust that name so.......but you are far more knowledgeable than I when it comes to the ca....so any tips will be appreciated...thanks

[boost_boy]

would you suggest any other cams or go with tomei???they are about the only ones ive found....but i do trust that name so.......but you are far more knowledgeable than I when it comes to the ca....so any tips will be appreciated...thanks

If you can aquire Tomei cams, go for it. Jun makes good cams if you can find some as well as HKS. With some mild porting and a good valve job, you should gain some useable horsepower. Just make sure you arm the head with some good valve springs and control the engine with some sort of functioning engine management device that can be tuned by someone and you should be happy with your investment.

Dee

[tnslide80]

alright thanks guys for all the input so far....should be ordering this stuff soon....any word on that one fellow makeing us some cam gears for fairly cheap???

[lilskyline240]

how much are those Tomei cams going to cost you? and i heard somewhere you have to modify the head a bit to get anything over 264's to fit?

[tnslide80]

they are 480 plus shipping....ive not heard about that modification being needed anyone else know for sure??

[ch187]

where from? i cant find cams for ****.

[tnslide80]

't called yet180sxfaktory.com is where i found them hopefully they are in stock haven't called yet what about this extra work to fit the cams????

[dattodude]

Duration doesn't need any headwork, extra lift does.Keep lift under 8.8mm and you don't need to do anything.

Anything greater than Tomei's 260 degree cams will probably need the piston crown to valve clearances checked, as Dee has already said.

Do some research on camshaft "base circle". Even on this website, we've discussed it before.

Seriously though. I'm yet to see any decent value in my 270/9.25/solid lifter combination. I could have bought 2x S15 SR20det for the amount I've spent on my head alone.

[lilskyline240]

im thinkin im just goin to go with tomei 256* cams. Give me a little more duration than stock. im lookin for 400whp and ive seen some ppl sayin the stock cams would be fine up to 400,

[boost_boy]

Seriously though. I'm yet to see any decent value in my 270/9.25/solid lifter combination.

Your turbocharger choice, engine management, tuning, and the accomodating facts determine where your set-up takes.

I could have bought 2x S15 SR20det for the amount I've spent on my head alone.

I could've gotten my kitchen remodeled on what I paid for the work done on my head including the JUN components, so I know exactly what you're talking about.

Dee

[bentvalves]

why would a matched set of tomei 270's need cam gears to be dialed in properly?

I was told on this board that my 256's did not need cam gears to be dialed as the cams are already a matched set from tomei.

the grey area of adjustable cam gears.....awsomeness.

I was also told that adjustable cam gears are only a benefit when running mismatched cams, higher lift or duration intake vs. exhaust.

Whats the deal guys, can real power gains be had from spending the time futzing with these things?

Greg

[themadscientist]

Your cams should be degreed regardless. anything like a head shave, gasket thickness change etc can alter the cam phasing. Even if you have done nothing unusual you should check, never assume. I think when Tomei says they are "matched" they mean to work with each other. Again, even if they mean when a stock gear is used they are true "straight up" that goes out the window the minute you drop a 1.6mm HG on or have a clean up pass done on your block and head. They will still be "matched", they will be equally off. If you need to correct cam timing you will need adjustable gears. Just counting belt teeth and calling it done could be a fatal error especially when machine work and tall aftermarket cams are involved. I have a set of 9.5s going in mine, that is some silly lift bet your *** I will be degreeing them, not looking to bend my valves on the first crank.

[bentvalves]

so is there an exact science or procedure to degreing ca's?

I have some 10.36's kicking around I believe....hella lift.

not sure if they will ever get used though.

straight circuit cams.

[themadscientist]

It is exact. The basic idea is the same for any piston engine with just different methods depending on the location of the camshaft.