I bought an upgrated head for my gen 2 ST185CS.
The head has oversized valves (ferrera +1[mm], in- and ex)
New everything and stronger springs. Just got my ATS modified cam gears in a few days back. Now all I need is cams.

Further mods:

Autronic SM4
Sard 800 cc's
walbro 255
Wolfkatz fuelrail
Blitz Active clutch
GT3071R exernal wastegate
Going FMIC this winter(now has ST205 IC modified)
Engine is stock

I'm looking for some good cams. Want a street car, no peak power up top.
I was thinking about GSC 268 or HKS 264. What is the difference in lag/power etc between the HKS high lift and low lift cams.

If I buy gen 3 high lift cams, I will need to modify the head to accomodate them right?

Any other pro/con arguments on the hks high- or low- lift cams?

Cheers,

_________________
ST185 CS #1845

had a look at kelford cams?
http://www.kelfordcams.com/

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GT Four Adovansu

"I want to enjoy the powerful and nimble agility behavior."

Hi,

a friend of mine uses gen.3 3S-GE cams on his gen.2 head, iirc they are p&p, i can ask'em if you want

you should let us know a important thing, what are your targets?

if time is not essentional you can also ask CAT CAMS to do a set for you custom to your requirements, like i did

greetz

_________________
KEEP COOL UNDER PRESSURE

street legal?.....perhaps in tschibuti

Have you ever seen this camshaft test ?

http://www.cj-motorsports.com/camtest.htm

there is a 272/272 High vs Low lift that will probably give you an idea



With my gen.3 engine, gen.3 turbo intake cam and gen.2 NA exhaust cam, ported head, std valve / spring / retainers ..., while playing with cam pulley, we managed easily 570+Nm @ 4150 (already 440+ @ 3250) on fensport CT20 stg 2 hybrid, top end was not so good (370HP @ 5780 and then falls 320 @ 6250 and falls and falls).For those numbers we put overlap ~19°.
To track the car i need a larger power band so we mod overlap to ~7°, we managed 510+Nm @ 4250 (compressor can't do better, 360 @ 3250) and 391HP @ 6920 (turbine limited us).
We had to run a rich mixture at high rpm (10.6) to prevent knock even if EGT (890 max) are good enough to lean a bit more



I think the "Torque master" or the "Top end master" will be achieve by cam setting more than select the good lift. You have a good turbo and putting overlap while runing high rm was not such an issue as me, if you don't bother show everywhere 4xx HP but be happy with a 600++Nm don't fear to overlap a bit more the cam.

@Sunny

My goal is to have a fun fast streetcar. No circuit for me.
I'm now at 280 bhp @fly, which is not so good for the mods I have.
Aiming for 350 @fly. Point is I'm always exited to see what the next mod will do.


@bozo

I have seen that test befor, but forgot about the high /low lift sheet. Thanks for that.


Next mods will be:

EVO VI fmic.
Thicker hg.

Problem is, my engine knock's very fast. Had a leakdown test done befor my "project", and everything was good. Have had the head milled and using a MHG of 0.8 right now. Maybe going for a thicker one can reduce the knock a bit so I can run more timing. Base timing is at 10* and timing in the map is at aroun 8* at 1 bar. A/f is at 11.5. The car sounds good when reving, but laks power.

Vid.

http://www.youtube.com/watch?v=wOjuNf7L9WE

_________________
ST185 CS #1845

Lucky Swan

_________________
Vice Chairman
1990 White UK Celica ST185 - Project DTM
1997 Cream BMW R1200C (as seen in James Bond "Tomorrow Never Dies")
2005 Jaguar X-type 3.0 Sovereign AWD Automatic
Blood Bikes - https://www.freewheelers.org.uk/

Hi,

you drive a GT3071R in a fun streetcar

i think you should give the engine a higher rev limit for such a big turbo, you can definitely drop the oem cams, i would go for cams that can handle 8000rpm -> ask cat cams, my custom cams was cheaper then anything else on the market

thats the way i would go

greetz

_________________
KEEP COOL UNDER PRESSURE

street legal?.....perhaps in tschibuti

If you are not planning on driving on track the standard Gen3 3S-GTE cams may well be best. I know this might sound surprising but quite a few owners have experimented with various 264 and 272 duration cams but have returned to the OEM Gen3 cams for road use. The reason seems to be that the 'hotter' cams move the power and torque higher up the rev range AND there is usually a reduction in power and torque lower in the rev range between 1500 and 3000rpm. This results in the car being less 'driveable' on the street.
Of course, if you don't mind rowing the car along on the gearbox in traffic then hot cams may be fine for you

_________________
Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp

The GT3071 is there, because I firts experimented with an EVO 3 TD05-16G. That kit was custom made. It's a good turbo, but the kit fell apart a few times. It had a custom adapter between the oem exhaustmani and turbo. That melted twice. It got welded up again, but it was time for a "real" turbo kit. Something that would not fall apart. So I bought a KOracing kit. Exelent quality and nice turbo. It's a bit bigger, but the alternative was a GT28RS, and that was a bit to small. Hence the GT3071.


I would go with some gen3 cams, but what effect would the oversized valves have?Actualy I prefer these, less hassle with mounting and degreing.
The car has been down for a year during y project, and I would love to drive it as much as possible. In the winter it is of the road and I can make a few changes.

I can raise the revlimit no problem, but then I need an upgrated oilpump. My engine has everything band new on it. The new head has upgrated springs, but still shim over bucket. I understand from reading it is better to have shim under bucket if you want to raise the revlimit to 8K.

_________________
ST185 CS #1845

I would have done it different if I were to do it again. I would swap a gen 3 in there and call it a day. Huge difference in stock power between gen3 and 2.

_________________
ST185 CS #1845

To you want to swap our turbo ?


gen.3 cams will be fine but i think degreeing them is better to be ok with your big GT30. Playing with overlap give good result if you don't want to go the 8000's way

So logically of you fit OEM Gen3 cams then this would be better suited to your head spec of shim over bucket. If you fit hotter cams then to get the best benefit of them you would need a higher rev limit which in turn means for safety you'd be better to fit shim under bucket or go the shimless 1ZZ bucket route.

_________________
Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp

personally I'd go 256 (if available) or 264 high lift. It will compromise torque slightly but help hugely at higher rpm

No higher rev limit required but you'll probably pick up gains from 5500 to 7500 where the stock rev3 head chokes

What degree are the Gen3 3SGTE cams?
iirc the intake and the exhaust are different?
and what degree are the GEN2 3SGTE cams?
would the kelford 258degree not a good choise for this setup?

gen2 3SGTE (225ps):
In: 236deg, 8.2mm lift (timing 8/48 )
Ex: 236deg, 8.2mm lift (timing 56/0)

gen3 3SGTE (245ps):
In: 240deg, 8.7mm lift (timing 7/53)
Ex: 236deg, 8.2mm lift (timing 50/6)

gen2 3SGE (165ps):
In: 244deg, 8.5mm lift (timing 7/57)
Ex: 244deg, 8.5mm lift (timing 57/7)

gen3 3SGE (180ps):
In: 252deg, 9.8mm lift (timing 7/65)
Ex: 240deg, 8.2mm lift (timing 53/7)


Read timing like this :

gen2 on the left, gen1 on the right