i was wondering will a stock b20vtec blow its sleeves if a 55 shot of nos is used. no block guard. or will it work fine with the right fuel. he;s only going to use it one time will this effect its performance.

 

don't be suprised when you have no compression because your sleeves cracked or your piston rings are f'd up. 9200 RPMs without building your block?! are you insane?

putting a vtec head on a stock b20 bottom end isn't the smartest thing in the world. add nitrous to the equation, and you are just ASKING for it. wow...

 

you got a point man thanks for the info its my friends set up. i told him he's kinda crazy. but he has money to build the block any way.

 

and it's professionally built forgot to say to that plus its tuned.

 

55 shot won't even phase a built b20vtec (as long as you get the fuel there).

 

its a stock b20vtec but professionally assembled and tuned.

 

i would be more concerned about taking it to 9200 rpm than than a 55 shot on stock internals

 

i don't care how well that motor's built. the stock parts that it's professionally built with are only meant to handle 6700RPM at the most (if it's a b20Z, b20B=6200). it can't handle 9200 RPMs, even if you make power up there.

here's my take on b20s. the sleeves are weak. they crack. no VTEC, no boost above 6 psi, and no nitrous, until you resleeve and build your bottom end properly. your motor can turn into learning experience and a garage conversation piece really quickly if it's not built right.


Modified by MugenDude at 11:30 PM 10/26/2004

 

I agree. My buddy had a B20 with a B16 head. I put the motor together, and after 3 months the sleeves cracked down the center of 2 & 3. Now, we are planning his 3rd motor, since he managed to blow a 2000 USDM ITR after 8 months, and blow the internally built B20. (internally built minus sleeves). He was taking it up to 8500, and still managed to blow it apart. NO forced induction, just all motor.

 

why r u reving that high?
ur just killing the motor

u should replace the rod bolts and keep the rev down at least under 8krpm

besides its probably not makeing power over 7krpm

as far as a 50 shot its nothing
u can run 80 direct

tuneing is the key!

 

thanks everyone. bump