Backfire @ WOT

TYTILIDIE

TYTILIDIE

METH HEAD
I was mowing down a 200SX with D.E.T. motor swap when all of a sudden at the top of 2nd I hear a backfire and saw a big puff of smoke. It seems to be RPM related. My gears feel like mush and are slipping a little here and there. Is it possible that Im hitting the rev limiter and this is what is causeing my backfire? Any help is greatly appreciated.

Mike
 
TYRODD

TYRODD

My ass. Look at it.
Re: Backfire @ WOT

Check your timing...

What is it doing between shifts? If RPM rises sharply in between...you're on borrowed time with the tranny.
 
G

gmcturbo

Active member
Re: Backfire @ WOT

did you have plenty of gas? it can and will starve at wot if youre below like 1/2 tank
 
1

100in6

100in6
Re: Backfire @ WOT

i would wonder about gas too. even if the tank has fuel in it the pump may be gettin tired. do you have a pressure guage? that would answer that question. also, how about boost? do you have a boost guage? if it's goin lean you could also be gettin a boost spike. start bein careful till you find the problem.
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Backfire @ WOT

I havent had a whol;e lot of time to hook up all my diag tools to pin point anything. I think I am pretty sure its the tranny as the RPM's do rise between shifts. Ive been suspicious of it for a while now. When I pulled themotor a few months ago I smelled and inspected the trans fluid and it smelled like ass so Im thining thats it. I may do some more testing just to be sure. Found me a Typhoon today for $800 that was in a roll over and will probably use that trans for a month or so while I build mine. I go look at it tomorrow.

Mike
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Backfire @ WOT

Oh yeah and I noticed today that the RPM's are now rising at lower RPM's and not at WOT. I am going to immediately stop driving it.
 
Tooky

Tooky

Serious about performance
Re: Backfire @ WOT

I agree with your assessment. When you look at the Typhoon tranny, look on the rear, right side edge right above the pan rail, look on the side and see the numbers etched into it. If it starts with 2LHM or 3LHM you're in GREAT shape as it's an honest to God original Typhoon tranny (just hope it hasn't been rebuilt with bogus parts.)
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: Backfire @ WOT

Good info thnaks man. I will definately check on that one. I will be popping mine out this weekend or the beggining of next week. I just hope that the hard parts are ok. Ive been hearing this weird grinding sound lately and am hoping its not any of the planetaries or anything like that. Well see though.

Mike
 
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