2tg head flows

[NME308]

Just because I love all things drag racing and particularly TOYOTA drag racing I looked up the 593RWHP Carina drag strip statistics!
9.37 seconds at 143MPH.

The Puerto Rican Corolla ran 8.8 @ 157+MPH with 548RWHP.

Given I know the PR Corolla is stock chassis drag car it will not be a featherweight. From the video clips of the european Carina it is a stripped out drag only car but cannot see if it is tube chassis so I'll assume it to be stock chassis also. If we give the two vehicles an assumption of the same weight then the european Carina is down 140HP at the drag strip on the PR Corolla.

Seems the Peurto Rican chop job on the intake port of the heads is quite effective!!!

Cheers,
Jason

[toyota1515]

Seems the Peurto Rican chop job on the intake port of the heads is quite effective!!!

Cheers,
Jason

Check the T head thread i post some pictures and explanation on how i figure out why i like the chop port job we do, just take in consideration back in the early 80s internet wasnt available for me and all these designs i have to swet and tears to try and find them in books and ol magazines to if i get lucky came up with an answer, it was not till a race in PR when the american cars where there, that i see with my own eyes the hemi heads port jobs and my photografic memory do its job, couple other guys did the same as i did watch some of the engine builders from PR near me looking for the same oportunity to watch those heads.

[J-M kujala]

Carina it is a stripped out drag only car but cannot see if it is tube chassis so I'll assume it to be stock chassis also.

Class rules says

Full chassis, tube frames are illegal.. all stock struts, steerings, x-members, full steel chassis, and electric things etc had to be installed, car had to be a road legal, no slicks (D.O.T radials), stock type transmission, no lenco etc.. no air pressure.. no Nos,

Minimum weight to class is : 1050 Kg EFI adds +25 Kg and turbo +25 Kg. also cars had to be at least stock weight (weight in registration papers when car was new) so i says the weight is minimum 1100 Kg otherwise it is illegal.. think the car weight is near 1100 Kg all extra is extra weight over the rule..
usually cars are stripped and added extra weight to the rear or floor off the car.. to get the better weight ratio (rear front)

Just because I love all things drag racing and particularly TOYOTA drag racing

Going to far off topic... but because you like, this is one my fav cars in drag race, dont know much of the car, exept it is Finnish and going with 4AGE and 8" toyota Diff. race in same class than Carina.. so its not light..

http://youtu.be/6od0ViFW63I
http://youtu.be/zTpj2gIuxVk

[metcap]

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

does the carbs have any role in those hp figures? would itbs give better results?

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.

how aggresive are your timing retards when building up boost? I'm asking coz at the moment I do feel my car is building up speed to slow and I'm dropping about 1-1.5 deg per 10kpa. I've my timing at about 35deg going into boost.

[metcap]

can give some good references or links to websites on cam and timing? also what're the best books available on the market on this subject?

[toyota1515]

Going to far off topic... but because you like, this is one my fav cars in drag race, dont know much of the car, exept it is Finnish and going with 4AGE and 8" toyota Diff. race in same class than Carina.. so its not light..

http://youtu.be/6od0ViFW63I
http://youtu.be/zTpj2gIuxVk

The hell, This 120Y car is NOT stock chassis, as far as i can see it is backhalved with ladder bars or aftermarket 4 link, with at least 26x10 rear tires and not DOT at all to work that well on a manual trany, And speaking about trany that is not an oem trany either clutchless is what it got.

Not to contradict you but i am a chassis fabricator and i can spot it from the first look at it.

[J-M kujala]

4-link or ladders can use.. but DOT tires, that is 100% sure, only accepted tire for street class cars over here.. Clutchless.. all cars are clutchless, stock type means can use up and down by hand and fully streetable, sequential type or H pattern.. you know what i mean.. usually nothing expensive is not used..

but for being 4AGE under 1600cc car and quite heavy, its going quite well. speakers are mounted to rear window in some videos.. always atleast 2 seats etc.. rwith those "heavy" car rules they try to get more different cars to race.. because there is not so many drag car.. Rally is all over.. racing between threes..

and its 140Y

take some beer to drink so watch and share one incar..

http://youtu.be/Le66u02q1oc

i am a chassis fabricator and i can spot it from the first look at it.

i think we all see that car cant be that low with all stock things in rear.. no need to be a frame manufacturer. our rules are quite wierd.. and basicly i dont know much off them..

and we are in Wrong topic \o/

PS: fast moderator can clean a little this topic

[toyota1515]

They call em cheater slicks yes DOT but not quite lol

Yes this need to be cleaned a little!

[Celica RA45]

the heads were all flowed by them selfs .toyota just changed the carbies over the 3 different heads ,all of the pistons were 9.8 to 1 comp

[toyota1515]

I love to share this with you guys, this car is done by my good friend Joelo performance and he is the best of the best that i know on the 3TC engines , what you are about to see is the fastest pass made by a 3TC powered car ever!

[NME308]

how aggresive are your timing retards when building up boost? I'm asking coz at the moment I do feel my car is building up speed to slow and I'm dropping about 1-1.5 deg per 10kpa. I've my timing at about 35deg going into boost.

As usual please remember my strategies revolve around 7:1 compression!
On the street:
I am currently running around 37deg static timing read on the balancer. I leave the timing alone until 8psi boost then the msd gradually pulls 20 degrees out between 8psi and 25psi boost. Early on in development I had been pulling timing from the 1st psi of boost due to having an MSD BTM module and used to encounter misfires and banging out the exhaust if 1 or more deg/psi was selected. Back then with only 11psi total boost it turned out that with static ignition timing of 30deg the MSD BTM module worked best with the dial set to zero - in other words the engine was totally happy with 30deg timing and 11psi of boost!

Drag strip:
Static timing is set at 27deg on the balancer (easy done with an MSD ignition timing control with an in cabin dial!). I leave the timing alone until 15psi boost then the MSD gradually pulls 9deg timing between 15psi and 25psi.
To stage the car a switch on the clutch has the MSD pull 25deg timing and activate a 4500rpm limiter and there is pretty quickly around 16psi boost waiting to go. This staging anti lag setup is why I run the 27deg initial timing at the drag strip as the MSD only controls up to 25deg timing and the anti lag needs it dropped close to zero timing!

Cheers,
Jason

[NME308]

Going to far off topic... but because you like, this is one my fav cars in drag race, dont know much of the car, exept it is Finnish and going with 4AGE and 8" toyota Diff. race in same class than Carina.. so its not light..

http://youtu.be/6od0ViFW63I
http://youtu.be/zTpj2gIuxVk

Very nice!

Cheers,
Jason

[toyota1515]

As usual please remember my strategies revolve around 7:1 compression!
On the street:
I am currently running around 37deg static timing read on the balancer. I leave the timing alone until 8psi boost then the msd gradually pulls 20 degrees out between 8psi and 25psi boost. Early on in development I had been pulling timing from the 1st psi of boost due to having an MSD BTM module and used to encounter misfires and banging out the exhaust if 1 or more deg/psi was selected. Back then with only 11psi total boost it turned out that with static ignition timing of 30deg the MSD BTM module worked best with the dial set to zero - in other words the engine was totally happy with 30deg timing and 11psi of boost!

Drag strip:
Static timing is set at 27deg on the balancer (easy done with an MSD ignition timing control with an in cabin dial!). I leave the timing alone until 15psi boost then the MSD gradually pulls 9deg timing between 15psi and 25psi.
To stage the car a switch on the clutch has the MSD pull 25deg timing and activate a 4500rpm limiter and there is pretty quickly around 16psi boost waiting to go. This staging anti lag setup is why I run the 27deg initial timing at the drag strip as the MSD only controls up to 25deg timing and the anti lag needs it dropped close to zero timing!

Cheers,
Jason

So u got it set up that way huh! did it pops thru the muffler every time you shift while going down the track?

[NME308]

So u got it set up that way huh! did it pops thru the muffler every time you shift while going down the track?

No pops on regular gearshift - only badly missed ones! That is because there is more to the drag tune... The MSD6AL-2 programmable has 3 rpm limits available! Total rpm limiter gets set at 7500, launch limiter is set at 4500rpm combined with 25deg timing retard, and gearshift limiter is 6000rpm.

I have 2 switches on the clutch. One is a brake light switch as there just happens to be a mount behind the clutch pedal just like for the brake pedal - this one is the activation for my gear shift limiter. The second switch is an old B&M transbrake switch I have mounted to the clutch pedal itself and is activated on the floor as the clutch is depressed almost fully - this one is my anti lag activation switch.

Hey where is the new karioka starlet lately? Been a while since the record was set, are they reloading the weapon???

Cheers,
Jason

[toyota1515]

ohh yes and now it is coming with bigger tires and a suspension tuned by the best of PR GRS-motorsports owner Gaby Chassis, also some new tricks on the engine so looking for faster times now at the Summer Nationals and the Pan Ams @ Atco NJ