hi

just bought me a set of Weld racing 15in x 10in, planning on mounting them on my toyota starlet FWD with a 2,0l 850bhp engine and semi hot rod chassis

gear ratio :

1st : 3,214
2nd : 2,045
3rd : 1,333
4th : 0,972
final : 3,944

just vondering if the M/H 10.0/26.0-15 would do the job or ......!!!???

 

john from m and h (slicksmh) on here will help you out.

 

anyone else ...

 

you need to take your gear ratio's plug them into a gear calculator, and then compare the rpm limit and the rpm drop between gears to your dyno chart and see where you fall.

 

here it is. im not sure how high you rev your engine up, but here is what i found. (you dont have enough power to go 191mph) get a differant final. such as 4.4 or something and go from there.

here is 3.9 final



here is 4.4 final

 

where do i find that gear calculator...!!!????

 

make one in excel.... it's pretty simple math

 

Here's one that may help you.....

http://teammfactory.com/gearcalculator.php

 

http://autocrossing.com/cgi-bin/gearcalc.cgi

^^ is the one i like to use.

 

with a runthroug i have currently discovered that i have a final : 4,3 and a 1st gear 3,230 in the spare gears , would those do the job , its the closest i get without spending ALOT of money i the tranny ( remember that every thing shall be specially made when its a fwd toyota )........................

 

here is what the calculator came up with. Both of these are with your new 4.3 final and 3.230 1st gear. one is on 24.5 inch tires, the other is on 26 inch tires. i think you would be more suited to using the 24.5inch tire.

24.5 inch tires / 9500 rev limit

_______________________________________________



26 inch tires / 9500 rev limit

 

already got the 24,5 - 9,5 - 13 , but think ill buy the 26-10-15 just so i can swith to see the different .......

thanks ......

 

do you happen to have a dyno graph ?

 

not currently , i havent assemblied the engine yet... but start up and dyno is going down in jan /feb 09.

 

well keep posted

 

just if anyone is wondering the set up is this :

* 3sgte 2,0l block ( gen 3) ( bore 87mm)
* 3sgte small port top heavyly modifidet
* manley + 1mm valves both in and ex
* Ferrea valvesprings ( double)
* Power-division 850+hp cams
( Intake 278 Duration 11.2mm peak lift
Exhaust 278 Duration 11.0mm peak lift)
* spec home made alu intake manifold with 80mm throttle body
* spec block girdle
* Pauter beams with custom age arp bolte
* colmplete ARP bolts and nuts for engine
* spec high flow ex manifold
* 2x turbosmart 38mm wastegates
* Garrett GT4294R
* CP spec piston ( 10:1)
* 118 octan race fuel
* KMS engine mangement
* Bosch 1600cc injectors
* Audi v10 coils
* TIAL 50mm dumpvalve
* CRX racing water to air cooler
* CRX racing water cooler
* Nos ( if needed )





tell me what you think......

 

some pic... of the project....

http://www.zatzy.com/members/beyer-a...uest-9sek.html

 

i like it !

where did you get that air horn for the turbo inlet ?

 

a buddy of mine , got it from a train ( inlet ports from a train ) first i wanted to buy or make one my self , but when he showed me these .... they would work fine i think...

 

what would be the most optimal gear ratio with the 26/10 - 15 rims and 9500rpm , about 800kg with driver and fuel and 800hp on the wheels .... ????!???? ( i know its not easy to say but just need some guidelines )

4 or 5 gear !???

 

can you try a 4.4 final drive ?

with the ratio's up above, 4.4 final, 4 speed trans, 9500 limit, on 26's, that should be good for about 171.8 mph

 

the reason that im asking for a good gear setup is that , we have found a company that can make gear / dog box for us , so got the oppertunity to choose the right gear ratio....but if you think that my setup now but with a 4,4 final is good then it works fine with me

 

You will need your torque curve(which would be a catch 22 because your probably going to dyno with tranny in... lol), But perhaps this spreadsheet i attached can help. I wrote it for myself, but if you can work it, work it. ghetto Rel notes

 

hi again - i have just orderet the spec made gear box , and have totally free choice of ratios , what vould be the best ratio in all 4 gear and i final .....
running with 26-10-15 MT drag , 700kg full loadet car with driver , and a power band within 5-9500rpm ....

what do you hotrod guys running in ratios , just for guidelines !!!?????