Grizzly

Hi i am geting setup to rebuild a 13B T2 engine it's stock at the moment what are the weak links? what tends to go on them?

I have a bit of a list so far, i will be using 2mm Apex Tips,13b-rew Housings, Rew Rotors with Hurley tip oilers and maybe Stantionary gears.

Can i use third gen Stantionary gears or not?

What else is suspect on the 13bt engines (1990 Mk 5 Turbo 2)

Thanks

niner

well, the series5 TII engine is pretty strong. your off to a good start with what you have now
probably the biggest weak point (compared to the REW) is the casting around the dowel pin areas. but that was more of a problem with the series4. it led to cracking with high power outputs. the series5 is supposed to be better
the REW stationary gears can be used as long as you use the thrust bearing and front counter weight as well. the REW gears are better because they are factory hardened and allow more oil flow
hope this helps a little

niner

here ya go, this article goes over some of the weak points and some more info, but i think you are in good shape with what you have


http://www.mindspring.com/~pko/13BTvs13BREW.html

Grizzly

When you refer to the counter weights, can you just swap the Ft ones over or will that mess up the balancing (would it be easier with the set fitted?)

niner

im not really sure, the article just says the front

Grizzly

ok

HWO

i dont totally want to diss that write up but there is some stuff in there which is a total load of crap.

There are guys out there - lots of them, making well over 500HP on Series 4 blocks who aren't cracking end plates, there is guys out there making 830HP from Series 5 blocks without cracking end plates.

Cracking end plates is 9 times outta ten the result of detonation, nothing to do with the HP output of the engine

SO what are the weakpoints on the motor? THE TUNER!!!!!!!

MikeL

My 154k mile, series 4 rear iron housing cracked at 19 psi.

ZachSpazz

3rd Gen corner seals are quite a bit better than the 2nd Gen ones. Something about the spring material and the seal itself are of much better quality.

niner

the corner seals are the same.
its just the spring that is better. I dont think anyone uses the old springs anymore.

HWO

your 154k mile series 4 plate cracked when you detonated

either that or your end plate was totally knackered from the amount of miles it had done

MikeL

Mine was changed to the series 5 rear housing when that happened. The engine builder said that the later version "has better reinforcement" in the area that cracked.

If you folks out there are not "GODLIKE" tuners, you just might make a mistake. If you have the series 5 version, you might get to learn from the mistake without having to rebuild the engine.

Mike

Grizzly

I know the later engines got alot stronger but what i want to know is what i can do to the stock series 5 to make it stronger at big bhp?

And i am intrested in fitting Staitonary gears from the Series 6 to my 5 has anyone done this? what exactly do i need?

Grizzly

Would it be beter to get a Series 6 engine that needs new tips and make a hybrid of the two?

Felix Wankel

The main weakpoint?

Ignorant owners. Enough said.

Grizzly

Right!

HWO

as i said in the "why are rotary's so great" thread.

the problem with rotary's are their previous owners before ya get hold of them