Cams are HKS 272's for both inlet an exhaust. I rejected ChrisK's idea of using a mix of 272 and 264 after seeing how little difference they made to the power and torque. See here for details: http://www.cj-motorsports.com/camtest.htm Cam pulleys are TTE (ex-Hammo) so I'm not sure you can buy them now.

I have tried to show the head porting in the pics on page 1 of this thread but I probably need a Carter type spy camera to do the porting justice In the meantime I do have the larger originals if you're really keen

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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

Hutch, I should clarify that the pics Datajon showed on another thread of Engine Logics throttle bodies is not related to my engine build. My setup will use a single 70mm Ford Mustang throttle body.[quote]




lol... looks are not important. but performance design , what looks pleasing to the eye, does not always allow for maximum power gains..


Don it all looks good +1 , but why keep the distributor, why not wasted spark.

Did you installed the electric water pump..?


i for one will be hounding you for sure... on track...so you better get it spot on.... ..top job old man...

what size valves did you run with in the end...

Shame on you ,bolting on all those heavy metal brackets, would of thought some light weight stuff..

Is it not going in one of those heavy faffs..

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Black UK 96 205 shed with heater full on telemetry.

project six million dollar 185, faster, stronger, lighter than before.

Jon, by wasted spark I guess you mean CDI/Multi-coil ignition? I was/am quite keen on that route as most race engines these days seem to use it, even the Duratec 1600's being used in FF1600! I think its quite expensive though, certainly the MoTeC system Adrian is using on the Gen 7. The engine builder doesn't think its essential at this stage. I can always add it later I guess.

The valves are the 1mm O/S Ferrea Inlet and Exhaust with solid buckets and dual springs. Larger valve seats have also been fitted to the head as the stock seats were deemed to be too marginal.

Electric pump will be onfigured/installed once the engine is in the chassis. Thermostat has been replaced by a restrictor.

Light weight brackets can follow later

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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

Don this is coming along nicely,hell of a spec list you have there.very impressed indeed.
I like to think the proof is in the pudding that is why i think you are very wise sticking to the 400>500 area for reliability and good torque for impressive track times.

BRAVO (Clapping) well done.

I am having mine mapped this weekend which might see in the 620>650 mark,BUT i am going to de-tune this time for reliability. Say 600 with a good torque figure.The car seems to want to pull from very low revs, so i am looking forward to driving sonic again at it's full potential.That new manifold seems to be working.But as DJ said, it might be a bit to pretty to be effective LOL
Just something i have come across with mine is that the new throttle body did not have the fitting for the idle speed control on the bottom, i have overcome this but i would rather tell you via PM don.

Kris my Fudge ups are your gain as always

Hutch

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Please take your nails out of my dash..........501.1 Whp

Hey Don

Very interesting thread.

Im interested by your comments on the valve seats as this will be undertaken shortly on my motor.

I would like to ask the following questions if you dont mind.

1. What valve seats did you go for in the end and at what region of cost
2. Who fitted the valve seats
3. Where they pressed or shrink fitted using nitrogen?

Also on another matter have you just press fitted new core plug or have yours been pinned?

Keep up the excellent work

Kind regards

Matt

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1995 ST205

Mat, all the head work was carried out by another specialist that Jon knows. I don't have the techie specs yet but will assemble them as and when I can. There's no guarantee I'll get the info tho as most engine builders want to keep specialist details under their hat. Same goes for the core plugs I'm afraid.

On a more positive note I've posted up details of the cooling system in another thread. I would strongly recommend you read and absorb this as I really believe this is critical in keeping >500bhp 3S-GTE's in one piece. Adrian is of a similar view.

Hope things are going well with your build.

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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

Thanks don

Any info would be great. Dan uses nitrogen at work i know to fit all of there seats although this is a trciky business. We were looking at crearances recently and were of a similar "marginal" view of what would remain of the stock seats.

Dan also thinks it would be beneficial if not a requiredment to pin the core plugs and i suggest this will be done on my engine.

Its coming along don...wont be long now!

mat

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1995 ST205

Matt why do you think you need to pin the core plugs, if your coolant pressure is that high you will need some sort of coolant pump, not to leak….?????

have only see this done on massively powerful engine 4000 bhp nitro, not even on 800 bhp cossie engines, does the 3sgte have week core plugs.?

as for valve seats, oem seats have head material , even nitrogen cooled, pressed in tol, come out, this has happened many times fro use over the years, prob why they do the valve seat replacement on pre factory machined heads, they press cylinderhead material over the seats outer rebate, not just rely on friction tolerances, then face off, can’t bee done on a working head…


i am torn on this one, going to see how you all get on...

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Black UK 96 205 shed with heater full on telemetry.

project six million dollar 185, faster, stronger, lighter than before.

I am going to sound stupid here but why change the habit of a lifetime!

From what I remember teh carlos sainz had soem form of uprated valve seats/cutouts over teh stock St185 - were these carried over to teh St205 and what was teh difference?

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JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

Yep, CS had lazer cut uprated valve seats the regular 185 did not have.

lucky i have a few spare cs cylinderheads, all with varying ailments unfortunately.

2 have numerous cracked exhaust valves., worn guides , in need of rebuild,

now when you say lazor cut, what exactly do you mean, they cut the seats , or use it for heat treatment, what every they did, the seats have been machined afterwards.

some engine cyl/heads, have seats cast in the alloy head, others forge the head material around seats, followed by machining .

as from visual inspection, the stock 185 head , cs heads looks pretty similar on the valve seats, infact most area’s apart from the stud configuration..

have not removed seats from either head yet..some insight would be great into how it was created..

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Black UK 96 205 shed with heater full on telemetry.

project six million dollar 185, faster, stronger, lighter than before.

As many will know I am keen to keep the engine bay tidy and thus the standard 60mm centre feed inlet plenum for the ST205 is far from ideal as the intercooler pipework has to pass over the cam cover and go through another right angle bend on its way from the intercooler. Far from ideal on a high power 3S-GTE!

Anyway I've finally decided on the way forward for the intake/plenum design thanks to the input of JP (Diceman) who pointed me in the direction of the Toyota Caldina ST215 side feed manifold for the 3S-GTE. Subsequent positive comments from Adrian Smith of Fensport are also appreciated. I'd originally ordered a fabricated side feed manifold from Engine Logics identical to the one Ian Smith of Toyauto Centre is running on his ST205. Unfortunately supply problems meant that delivery has been delayed and the ST215 Caldina option looks very viable.

The ST215 inlet runner length is identical to the ST205 intake at the theoretical ideal figure of 350mm. This should give good torque compared to the short runner Engine Logics design although for all out race track use the short runner design may be beneficial at high rpm. You'd probably need a close-ratio gearbox to get the best out of a short runner design too.

Not shown is the Ford Mustang 70mm throttle body which is probably the largest that can be fitted (via an adapter plate) to the Caldina plenum. It comes with a throttle position sensor (TPS) but no idle air control. The lack of idle air is not thought to be a problem according to Adrian and JEMS as the MoTeC should be able to cope with some judicious mapping.

Rear view of ST215 plenum mounted on engine


Front view showing angled throttle body mounting


Side view of plenum plus Engine Logics MR2 top feed fuel rail and RC 1000cc injectors


Top view of plenum plus Engine Logics MR2 top feed fuel rail and RC 1000cc injectors


Interior view of ST215 side feed plenum showing smoothed and rounded entry runners - N.B. standard Toyota finish!


Intake manifold flange and runner finish - standard Toyota

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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

Very nice mate. The Caldina manifold looks nice, very Evo'ish. I'm curious what it'll put out eventually. I also assume the RH intercooler stay will come off when the engine is in the car? No use apart from the hook?

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René - Carlos Sainz 2433•5000
Turbocelica.nl | ST185 CS restoration and full rebuild

If it ain't broken.. it soon will be

Wow beautiful work mate! THE 205 engine

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Hi,

does i ask, is the TTE manifold you use the same as pictured on Kris HP?
http://www.gtfours.co.uk/

greetz

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KEEP COOL UNDER PRESSURE

street legal?.....perhaps in tschibuti