Jump to content
SAU Community

Recommended Posts

Hey every1

just asking wether i need any other upgrades if installing tomei camshafts in... the ones from just jap?

im kinda juggling between them or other mods, :)

how much gains would u get from them, i have a r33 series 1, large blitz fmic, 3.5 cat back, custom cai, custom manifold and soon customs front.dump pipes.....running on 12.psi :)

is it possible to just get the camshafts without altering the springs or valves???????

and how much would it cost for the install roughly :)

thanks guys

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/
Share on other sites

Hey,

Cams are good, especially poncams which do not need heavier spring, valves, or having an aftermarket computer in.The Poncams are designed to bolt on and drive off...not even cam gears are needed.0 adjustment works the best for them.

If this is the only modification you are planning in the next year or so ...do it because you will get great results.

Hope I have been of some help..

Cheers :sick:

These cams are around $800 for the set and installation should be around $400.

Your power output will increase slightly, but your response and power curve will be alot better.

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2624189
Share on other sites

700HP-GTR33...great to see you posting and getting involved in the forum...but

If this is the only modification you are planning in the next year or so ...do it because you will get great results.

You wont get any real gain if your still running the std turbo...and anything that changes the breathing of the engine as dramatically as cams means you need to tweak the fuel and ignition maps of the engine as well.

Look at the results of Bass Junky, cams proved to be a wast of money with std turbo, he even had management which was tweaked to try and get a gain with the cams. If you do a search i think you will find that ppl are yet to get any gains from cams on std turbo. On an R33 the best thing is an exhaust cam gear....a thread by benm and his old R33 comes to mind. The quikest std turbo / ECU R33 i have ever been in so exhaust cam gear gets my vote for a lot less money

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2625221
Share on other sites

on a standard R33 GTST (that is standard ECU and turbo) you will not get any real gain from just bolting in a set of poncams. the stage you are at now, your stock cams are best. maybe consider an adjustable pulley for the exhaust cam. you should be able to get some gain there.

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2625238
Share on other sites

The fuel and ignition maps need a rework, so you need a power FC or something similar. They do not work like standard in the low rpm and idle area in terms of mixture.

Gaskets/seals for the top where the cams live.

You will also need a set of new retaining studs as the old ones may break either down the track of when re-torquing them.

You would do well to obtain cam gears at the same time as mentioned too.

What tomei cams do you plan to buy and why?

Edited by rev210
Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2625244
Share on other sites

yes, the increase that can be received by putting cams in, can be resulted by a computer and tune alone. i mean a computer is an upgrade that has to be done along the way and most ppl see it as one of the last mods you do to your car. i mean this guy hasnt even got a fuel pump so putting cams in shouldnt be on his prioritys right now.

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2625331
Share on other sites

Roy is correct.

ECU or piggyback should be your next upgrade I just had an exhaust cam gear installed on my car while it was getting its 100k service. Gained 5rwkw which the tuner said they usually get with the stock turbo.

Only cost me $90 a good mod to do when your getting this service done. Look the groupbuy section of you want to get one

cheers

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2625472
Share on other sites

there is a small gain to be had on a stock turbo RB25...

I have made 208rwkw with SAFC, EBC, exhaust (stock dump) and FMIC at 10psi WITH Tomei 256 degree poncams...

even taking into account a 'happy dyno' there is an argument that they will give you some kw's at the top end and help it make power all the way to redline and not taper off at 6,000

dyno chart is attached, you be the judge but I think they are great

BTW they are set at 0 degrees and work with the stock springs and VVt

post-7369-1162174285.jpg

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2625799
Share on other sites

A mild set of cams allow the same power to be produced earlier in the rev range, with less boost required to achieve it.

But if you are planning on sticking with the std turbo....i would be very interested to see an engine that actually has more mid out of it. Does anyon ehave graphs of before and after?

Even with NickR33s results...im not convinced. The std turbo isnt that big for a 2.5L and i doubt they can provide the airflow to really need cams to help fill the lungs.

If NickR33 picked up some grunt...i woudl then ask did he have the SAFC tuned before the cams were installed?

Not being argumentative, just curious to see if we can rule out some other things :P

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2626808
Share on other sites

look I can't give a before and after so I am would be lying if I said I have any concrete proof... however I do seem to make the power at relatively low boost as rev210 would suggest

I had the SAFC in and tuned before the cams so no help there and I cannot be sure I picked up ANY power... however the last dyno tune before the cams was also pre FMIC and it made 170rwkws's... the cams and FMIC were added and SAFC tuned again (to pull even more fuel out) and I got 208rwkw... different dynos, different days

I just wish the tuner had done the before graph as I had wished

BTW the cams were always planned to go along with a turbo upgrade, was just curious to see what would happen if I did it the other way around

Link to comment
https://www.sau.com.au/forums/topic/140784-camshafts/#findComment-2626947
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...