Cams for 3T/2T

[TA22RE]

Hi All,

Need help with cams for a 3T/2T hybrid basically this is what Camtech has for the 2TG head what would you guys recommend

The Guys at Camtech in sydney have a stage 3 295*- 295* or a stage 4 319* -319*

[Rodger]

Hi TA22RE.

Can you please elaborate further on what the intended use of this motor is to be and the specs may be for the rest of the build.

The bigger the cam spec, ie the lift and duration, the higher up the power is in the rev range and the less streetable the motor becomes.

Regards

Rodger

[TA22RE]

The car is going to be for street but i want to try to get all i can out of it,
Im getting the head ported and polished with oversize valves and going oversize pistons in the block and running webbers.

Just want to have a bit of fun with this set up while i wait for the 13B


Stage 3
295*-295* Advertised duration
426*-426 Valve lift
248*-248* Duration
106* Lobe sep

Stage 4
319*-319* Advertised duration
416*-416 Valve lift
104* Lobe sep
263*-263* Duration

[Rodger]

Ok.

Are we talking about a OHV single cam motor or is it the DOHC motor?

Either cam spec will give you plenty. The stage 4 will have less bottom end and more peak power. Both will need double valve springs though, to get anywhere near their peak power outputs.

Then the webers will need to be tuned to get a balance between power and driveability.

If you are going to this much expense, consider a light flywheel or lighten and balance a stock one. This will make a big difference in performance.

Regards

Rodger

[TA22RE]

Its the DOCH motor, it has the double valve springs the previous owner must have put like a stage 2 cam kit in it in the past.
Im looking at buying a 4.4kg light flywheel from japan
Only reason im playing around with this motor is i got into a bet with a friend that i can get 13B mildport power out of the 3t/2tg setup even if it means using NOS,
I have read some past threads on toymods a few guys are talking about getting 140 rw kw so i thought ill give it a go

[Rodger]

Sounds like you have got it covered but check in the Dyno Threads for examples of power outputs from the T series motors. A good read.

140kw NA at the rear is possible but will take a lot of work and could well be at 9000-10000 rpm somewhere where rotaries live and not a lot of bang for your buck.

140kw on forced induction is a relative breeze.

Good luck and let us know how it goes.

Regards

Rodger

[keseventy]

Im currently building my 3t/2tg hybrid motor. I was going to go with trd 304/288 but they are near impossible to find, well at a fair price. So I've been looking around and found 'Camtech cams', it's going to be a autocross/motorkhana/sprint car.
Would the 319/295 from camtech, be too extreme? Compression will probably be around the 10.5:1 mark, and im using Keihen fcr41's for fuel delivery.


Cheers