gsxr 750 head swop

has any one fitted or knows if a head from a 750m will fit a 750l, any
associated problems, valve clearances etc etc ?

 

If the valves are the same length and you use the original camshaft,check
the shims,I`d have thought not.
Measure the valve-head dia. if the latter is bigger you might have a problem
with them hitting the piston crown if it has insufficient cutaway.
*note* I have never done this particular swap so don`t blame me if it goes
tits-up;-)
Just some things to look out for.

--
Petel .
02 M2 Buell.
C90-ZZR.

http://homepage.ntlworld.com/peteh1/website/index.html

 

Previously on usenet, Petel said...

I am pretty sure the L and M motor is the same unit. I had an L model
many years ago, and the M was only slightly different in bodywork.

 

The 1100M head had shims instead of screw&locknut tappets.
I don't know if the 750 changed at the same time.
The 750M probably had bigger carbs than the L too.

 

Petel says...

The 750L is tappets, the 750M is buckets and shims.

--
Lesley
ZXR400SP
SBS#11[with oak-leaf cluster]
BOTAFOT#101A UKRMHRC#12
BONY#54P BOB#18

Un-cork me to reply

 

Lozzo says...

The M model was when they changed from tappets to shims, so it is
different.

--
Lesley
ZXR400SP
SBS#11[with oak-leaf cluster]
BOTAFOT#101A UKRMHRC#12
BONY#54P BOB#18

Un-cork me to reply

 

Sig.sep. left in.

Ta for clearing this up..it`s a grey area now made black and white.
--
Petel .
02 M2 Buell.
C90-ZZR.

http://homepage.ntlworld.com/peteh1/website/index.html

 

There is a website with most of the known swaps - but I'm buggered if I
can find it. Somebody here posted it last year; it might pop up again.

--

Dave

GS 850 x2 / SE 6a
SbS#6 DIAABTCOD#16 APOSTLE#6 FUB#3
FUB KotL OSOS#12? UKRMMA#19

 

Here you go;

http://members.hometown.aol.com/ffastcbr/motorswaping.htm

 

That's the one. Ta.

--

Dave

GS 850 x2 / SE 6a
SbS#6 DIAABTCOD#16 APOSTLE#6 FUB#3
FUB KotL OSOS#12? UKRMMA#19

 

thanks for your comments all, i know the bore & stroke are the
same,carbs are the same, not sure if the valves will take out the
pistons though ?

 

Maybe your news server dropped the message with the site address in
it...

http://hometown.aol.com/ffastcbr/motorswaping.htm

It seems fairly comprehensive.

If the cam lift is the same, you probably won't hit anything. Dry bolt
the head on (with and old head gasket) with a bit of plasticine on the
crown of a piston and rotate a cam to open a valve. Bring the piston up
to tdc and see how much clearance you have by the mark in the
plasticine.

--

Dave

GS 850 x2 / SE 6a
SbS#6 DIAABTCOD#16 APOSTLE#6 FUB#3
FUB KotL OSOS#12? UKRMMA#19