Finnish race car project

Started by re japi, May 28, 2011, 02:26:28 PM

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re japi

246hp. But engine is build for max torque and big rev range. Torgue and power band is very linear and easy to use/drive. And its quite "lowcost" engine, no very expensive parts.

Oh, btw, it is Opel 2.0l 16valve engine. :)
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

Grant Monkhouse

I bet that\'s fun to drive!! Is the car sub 1,000kg?

re japi

Car weights 1030kg with driver. So there is 30kg too much weight.

Yes, Janne has done lots and lots work and thinking to get that car behave and run the way he wants. Even though engine is a bit low powered to this series, car is quite compatible because so much effort and time has gone to development and testing cars suspension and handling.

Well, there is not much Lada left in it. :) It has classfibre body, gearbox and rearend is from Volvo, suspension is based on Volvo components.

Testing process has taken 3 years now. Car is quite finished.
Car can do 0-60 meters in 1,6 seks in tarmac, so its good result for less than 250hp.
But I have tryed very hard to get rotary under that bonnet too ;)
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

Grant Monkhouse

For a non turbo\'d rotary he would only gain 50 hp if he used a PP motor.

Could he use a turbo motor?

re japi

Yes, but rotary doesent weight so much. And he could but rotary further back witch has big effect on weight distribution and balance of car.

Even though that engine is good, rotary would have bigger rev range. Also max torque would be in bigger range.

____________________________________________________________________________________________________

Basic engine rules in National Autocross series:

-Rear and middle engined cars are allowed max 2050cc

-Frontwheeldrive and rearwheeldrive cars are alloved to have:
   -2050cc max if there is variable valve timing system
   -2250cc max if there is multi valve head
   -2400cc max if there is 2valve/cylinder in head

-Rotary engines multiplier 1,8. Rotary is compared to multi valve engine.
   -rear and middle engine max is 2050cc
   -front and rear wheel drive is max is 2400cc

Engines must be N/A engined. Must be factory build. Must be car engine. No billet engines  or even heads allowed. Pump gas only(later re85 allowed)

All these rules was suggested and "approved" my drivers for benefit of this series.
It have become "Toyota MR2" series, so everybody wanted to change that.
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

Grant Monkhouse

How much does the current engine weigh? How much bigger is it than a 13B?

Advantage of the rotary is that you can rev them really high, iv been told 13,000rpm in drag cars, with only side clearencing the rotors. So a bridge port motor would effectively have a power band from 4,000 rpm to 13,000 rpm IF the gear box can shift at those speed. However the power won\'t be made all that way, most likely around the 7,500/8,000 rpm area maybe

re japi

That Opel engine is very small actually, and weights about 100kg with everything on it. But biggest differense is in height. Dunno for sure but I bet that Opel engine is about 10cm "taller".

In this engine, power band range is about 4000-6500 rpm. Janne has other engine too with power band at about 5500-7500rpm. It has good power, but torque band is crap. Both engines has rev limiter at 8250rpm.

So lets say that rotary has limiter at 9000 or 9500 rpm. Usually, compared to piston engine, power and torque curve is still rising. So there is a good area 4000-9000 rpm, witch is much more than piston engine. And those extra revs effects alot in shifting gear. In some curves you dont necessarely shift down or up. Or you could shift and power is there
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

re japi

Some update...

I have to say that Bro has bigger balls than I have. ;) I dont have guts to cut those panels open! Bro said that our father went quite speechless when he saw that! "WTF you have done!"...

Anyways, car looks awesome with that fat ass! :mmmm
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

Grant Monkhouse

Nice, very nice! No need to keep the original metal Under there with those arch extensions, weight saving;)

C J R


re japi

Only problem is where to find wheels or 4 inch spacers ;)
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

clive

Wo, ho, now its looking real real good :D
All the best Clive

Grant Monkhouse

Take standard wheels and get them banded/widened, get them done right and you won\'t need spacers :D

re japi

Lol Dont know what to do Grant. I mean, there is ALOT room for wheels and tyres. :)

Btw, does anyone need those original panels, they are in very good condition ;)
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1

re japi

Not much to report at the moment. Some work has done to car though

Today my brother is going to back surgery. Lets see how that goes...
Power is nothing without control. Weight is enemy of performance, handling and braking.

http://s1293.photobucket.com/user/japi_laukkanen/library/Japi?sort=3&page=1