well im bleeding gutted this morning gsxr 400 gk76a

[minkathecat]

COMPRESSION ON CYLINDERS SEEM OK ISH
IM GOING TO CHECK ON THAT NEXT IF THEM BLOODY CHAIN GEARS HAVE BEEN REMOVED
I CAN GET A PRE 93 CDI OFF A MATE BUT DO I WANT THE TROUBLE I ALREADY HAVE 3 OTHER BIKES TO GO AT HONDAS AND KWAKER.
BUT THATS INTERESTING TO KNOW THAT IT DOWN IN ME LITTLE BOOK NOW

QUESTION THOUGH WHEN I TOOK THE BIKE TO BITS COS IT WAS RUNNING CRAP
AND MARKED EVERYTHING UP TO PUT BACK THE SAME WAY
1 AND 4 CYLINDERS ON TDC , WHEN THE CAMS WHERE IN I NOTICED THAT NO 4 CYLINDER THE OFFSIDE CYLINDER TO ME
WAS ON THE FIRING STROKE WHEN THE CAMS WHERE PUT IN
SHOULD THIS NOT BE 180 DEG DIFFERENT
IE WHEN CAMS ARE PLACED IN AND TIGHTENED UP SHOULD NOT NO 1 CYLINDER BE ON THE FIRING STROKE
I know these coil is firing both 1 and 4 but seems unusuall to me.
regards john
i dream of a proper 1994 manual instead of this bandit one to go off

[stripes1976]

Have you got a copy of the 76a manual?

[minkathecat]

no stripes just using the bandit one as a comparison thats why i thought the cams where worne and put the 1991 cams in cos they where same sizes as bandit ones LOST COMPRESSION USING THESE SEEMS OK NOW ON PRESSURE TEST. THOUGHT IT WAS THE NEW RINGS OR A BENT VALVE
MY BIKE IS 1994 YEAR OF MANUFACTERE AND THEY CHANGED TO 53 BHP THEN SO THE CAMS AND DWELL ANGLE WHERE ALL WRONG
Have put the old cams back in but cant find anything on what the cam lobe dia is to check wear on these.
regards john

[stripes1976]

Give me a few days and I'll see if I can get hold of the 76a manual for you. It's somewhere around here. Although to be honest I have never really used it lol

[stripes1976]

I just tried pming both of you but seems the app I'm using doesn't work minkathecat you have variations of the same message about 10 times. If it hasn't come through let me know and I'll log on on my pc

[stripes1976]

With a post 93 running 2 exhaust cams works well. But not as good as pre 93. I've had a std 90sp do 68.7rwhp as a base run before I started tuning

[minkathecat]

stripes my email address sent you
my year of manufacture is 1994
im not interested in power so long as i can cruse at 70 mph do the job i want maybe later but im interested cos i got a spare engine year of manufacture 1991
not looking so bad now just need the cam bucket doing then i will have another chech on psi on cyclinders see if its come up better the cams i had in where ex 1.293 ones taken out 1.256 on cam lobe dia
inlet was 1.305 taken out was 1.268 i would love to know what the smaller ones say in the book for wear limits.
alls well that end well
regards john

for power i use the 600rr with more fiber and stuff holidaying use the honda hornet done up in race cup trim and for a really scarey ride the z200 i restored after finding it rusted to bits in a garage last bike 1928 triumph model n delux i restored whent to holland to a collector one of 61 running in the world and this is the last bike i build always wanted to have a do at a 400 street fighter

[Variablevalves suck]

Right John.
Pre 93 should have cam heights of 33.1 IN and 32.8 EX in mm

Post 93 will be 32.2 IN and 32.4 EX with limits of 31.9 IN and 32.1 EX.

[minkathecat]

thanks variablevalve wich means i have now got same size as you pre 93 on the inlet
and .007 inch down on the exhaust cam bellow nomal wear limits its find another cam ? shit lol
bilt up with new cams this morning
im not a happy bunny with this pile of crap so have decided to brake top end down again look at those valves and change those rings to the better ones i have
if only u could go out and buy new pistons plus for rebore etc instead of messuring up and make do whadaya thing on ex cam bugger it or what.

[Variablevalves suck]

If the cam looks clean and not worn it will be ok, they make tiny adjustments each year so a 1994 may be a few hundredths different to a 93 or 95 etc.