2tg head flows

[metcap]

Just interested to know at what rpm does u guys make all that 500+hp?

[toyota1515]

We never revs up over 9k
All the power comes up at less than 8600 rpm's

[metcap]

toyota 1515, thanks for sharing...knowledge is always welcomed.

We never revs up over 9k
All the power comes up at less than 8600 rpm's

possible to clue us in on your valvetrain selection? also, whats your max timing at that power level?

[toyota1515]

Valvetrain is very simple and stock, just stainless valve with a race valve job using 3 angles on intake and 2 on exhaust, dual valve springs vitton valve seals bronze guides, amaizingly rockers are factory with rocker spring eliminating locks, and chrome moly pushrods. Nothing fancy just good ol basic upgrades.

Timing depends on the cam used, each and every one is diferent due to regrinding process i got more than 6 different profiles, so each and every one gets setup on the dino where it like it better,

dizzy gets locked and an msd 3 stage retard box in combo to a 2 step and a msd 6al Is used for ignition.
We use the retard system to stack up degrees wile staging during 2 step to boost out of the hole, then switched back while already on boost during the run, and boost controller to manage power output during the run cuz we use 26x8.5 tire yes no big tire on the silver car.

[J-M kujala]

valvetrain selection?

This got Stock ones exept some upgrade pushrods and springs..

Just interested to know at what rpm 500+hp?

http://youtu.be/VLc93nUkkn8

answer with 2T Bottom... at the end of the video is short clip of dyno screen..

[toyota1515]

Ok now is that something you put your hands on or just something you find on the net? And what is the best E.T. On that carina with what rear tire size? you know just asking!

[J-M kujala]

ok so whats the best type of porting work to be done on the 2tg head for a turbo setup?? Hi velocity charge port or should it be for all out maximum flow?

read this post, i will recommend, easy, simple, not expensive, streetable, and long life, not a drag race engine..

Before i got 2TG with just cleaned ports, 11.5 C/R pistons (87mm), 3T Crank, 270 Cams, 40 mm Sidedrafts with 36mm venturies... 158 crank HP and 200nm + torgue..
Turboing it later, change pistons to 87mm flat ones, install airbox/cooler/Garrett RS500 turbo/etc parts needed. 327 Hp / 437 Nm / 1 Bar boost ~15 Psi

http://desmond.imageshack.us/Himg126...pg&res=landing

best what i found, not exatly correct dyno chart.. correct ones have been disappear on the net.. this got a little to much tire slip (small 14" tire wasnt fit perfectly to 2WD 4 roller dyno (Bosch hardware))... this dyno chart is from that "street engine" used that a lot in Racing circuit driving like 10 laps with full throttle, no problemos.. exept boil brakes (upgraded ones) and hub grease boil themselves out... but engine will work

~400 hp with 1.5 Bar boost / 22 psi just under ~115 mph trap speed with 185/60/14 street tyres.. with stock suspension.. at airport time was slower than my carina got, to much wheel spinning.. try only once.

[J-M kujala]

Ok now is that something you put your hands on or just something you find on the net?

Not put the hands, and not found at the internet.. just know them and parts used..

im not that much interested at Drag Racing to see what tires and where.. let say like Juha Kankkunen: Black around .. i dont remeber quartermile times at them, you can google it if found. (class: street legal cars)
Basic problem in Finland is, to less drag strip and only couple races in a year when is possible to try a good times... i had to drive ~300 km to nearest good race track.

[metcap]

Timing depends on the cam used, each and every one is diferent due to regrinding process i got more than 6 different profiles, so each and every one gets setup on the dino where it like it better

Do you ever go under 20deg retard to make max power on your builds? I'm asking coz with my piss ass 2tg hybrid turbo stock everything with 3tg cams at 1bar I need to ret to near 22deg just to get good power with no ping. Does this looks normal?

[toyota1515]

Well most of the high power motors i did just run on race gas so ping or detonation is not a problem to boost on the line the 3 stage redard box got a 2 a 4 and a 6 for a total of 12 degrees of retard from the static timing setup wich is locked with the buton we can go either 2 6 or 12 on the three setings of retard
But remember the lower the compression the less retard you need to run on pump gas and remember also that pump gas dont like more than 25 psi tops and i think that is pushing it talking about 93 octane rating

On pump gas i will experiment with my celica and see what i can get, i am setting my sights to a 350 to 375 whp help me God lol but here i cant get nothing better than 93 octane unless i switch to E85 and that is one thing i dont want to do cuz not every gas station carries it!

[toyota1515]

In my street celica i wont be running a 3 stage retard setup or a 2 step cuz is not going to be a drag car just the digital 6al masd ignition box with a fuel only ECU from microtech!

[metcap]

On pump gas i will experiment with my celica and see what i can get, i am setting my sights to a 350 to 375 whp help me God lol but here i cant get nothing better than 93 octane unless i switch to E85 and that is one thing i dont want to do cuz not every gas station carries it!

Yeah please let us know what are your results on pump gas, just good to have a strong reference so I dun have to go stumbling in the dark. BTW I'm on 95 octane over here, so I think I should aim for a slightly higher value?

[Celica RA45]

i did some flow work on 2tg heads about 25 years ago the 220 and the 222 and the 260 head the 220 head was good down low and could flow about 200 hp
the 222with the bigger valves was 204 hp and the later 260 head was good for 206 hp so not much difference all were carby heads ,but the 260 head was running solexes with 36mm chokes and the 220 with no sleeves had 30mm chokes and 222 had 32mm chokes and sleeves

[NME308]

Hey metcap just be careful of the octane ratings...
I believe the US 93 octane is equivalent to my 98 octane in Australia. If you are lucky then your octane of 95 may be better than the US 93 but better to creep up on the timing gently! Also different engines will respond differently to timing and compression (both static and dynamic). Along with fuel octane these will play a large role in determining your best timing. So once again start conservative!

Personally I am running aroung 18deg timing with 25psi boost. I believe there is 2 or more degrees I could go higher but havn't had a chance to test objectively. If performance is not increasing then best not to get greedy with the timing... On 29psi boost I have it set to 15deg timing once again yet to properly test if more timing is safe. This is on the Australian version of 95 octane fuel.

My own ignition strategy is an MSD6AL-2 programmable so I can give it plenty of timing off boost however that is to compensate for my 7:1 compression. This unit also allows me to program anti lag launch and clutch limiter etc.

[J-M kujala]

Yeap like nme308 says at least European ratings agaisnt U.S ratings are not the same.

I do not remeber just which way it was, and where used what formula. but atleast these 2 formulas have used:

Ron+mon / 2 = octane number what they use to sell it. (usually in Europe)

Ron, Mon. and lower number is what you see at gas station. (U.S ?)