I have been searching for a turbo cam for my SOHC ka project and have cam across a few possiblities. I contacted colt cams via e-mail and got a reply in a day. The e-mail said the following:We offer two very popular grinds for the Nissan 240 SX ( KA24) 12 ValveSOHC.1st stage: INT: 260° .424 Lift ($200.00 Canadian / $150.00 US) EX: 268° .441 LiftThis is a great wake up grind and gives a stronger mid range withoutsacrificing bottom end torque. The power band is approximately 1500 - 5500r.p.m.2nd stage: INT: 268° .441 Lift ($225.00 Canadian / $168.75 US) EX: 272° .442 LiftBest all around cam profile giving a slight idle sound and very strong midto top end power increase. The power band is approximately 2200 - 6500r.p.m.NOTE: No modifications are required for stage 1Stage 2 requires approximately .025" - .030" milled off the top of thecamshaft bearingcaps, where the rocker shafts secure. This can be done at almost any machine shop.
I am considering stage 2 seriously but I would like to rev the car to about 7400, ( the engine would be fully built) they say power is up to 6500. Will a profile more radical than this, be unstreetable. I also contacted racetep about the specs on their regrind but got some bs automated response. Any way my hp goal will be about 400 on high boost, so in your opinion will the stage 2 be adaquate for this. Also if anybody knows of any other companys that do good work or of a profile that might better fit my application I would apprecite it alot. Thanks in advance. P.S The car will be street driven but I'm not scared of a little ruff idle.
Sohc Turbo Cam
WDRacing wrote:Stage 2 will support 400hp. Larger cams will profit from a higher RPM. They don't say that because most people don't rev that high with the KA because of its long stroke.
With a built block and the right turbine you should see 400hp without to many serious problems.
Best of luckWD
Yes but that is a n/a cam right? If it has any overlap will that not cause boost to just run right through the motor without combusting?That has always been my concern when upgrading cam/s on a turbo motor.
James Poe
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Turbo_Nismo_EC
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When I was building my motor I asked my engine builder about possibly buying a cam to put in it. I found one but it had a quite a bit of duration and he told me that I would be better off using my stock cam rather than the N/A cam that I found. Apparantly with a turbo motor you want a cam with a lot of lift and not so much duratation..hence the reason I am still running my stock camshaft. But don't get me wrong, I would love to have a little bit of lope coming from my engine when it idles. If you find one suitable please let me know.
P.S.-I also have a SOHC KA
P.S.-I also have a SOHC KA
Well maybe i need to do even more research to get a better understanding of cam profiles. I was under the impression this was a turbo cam mainly because in the email I sent them I told them what kind of set up I am going to be running and (turbo) and my horse power goals. Is the overlap advertised usually or is there some sort of math involved to calulate it based on lift and duration? Adam is the cam that you have for sale a turbo cam or is it more for NA?
NA cam
Nissan Motorsports has a cam with a duration of 270. From what I have been told, this is the best duration for a NA 240SX.