Go Faster?

mikey · #1 PostAuthor: **mikey** » Mon Sep 12, 2011 10:43 pm

This winter contemplating doing something with my ltd 1000 (j type motor)
no not a gallon of petrol and a match or chucking it in a skip etc etc etc.

Build some sort of modded bike out of it, but am i right in saying cuz the motors in a ltd its not as powerful as if it was in a J ?
If so could it be brought up to that spec and if so whats involved?

#2 PostAuthor: **Ginger Bear** » Tue Sep 13, 2011 8:23 am

Mikey,

Not sure about the motor spec, but I'll be over with me grinder in a flash. :sou

#3 PostAuthor: **paul doran** » Tue Sep 13, 2011 8:27 am

Mikey trawl ebay for a set of GPZ11 cams they will work wonders on it seriously

coldsummer · #4 PostAuthor: **coldsummer** » Tue Sep 13, 2011 9:15 am

Hey Mikey, thinking of a trike maybe :?:

tlc · #5 PostAuthor: **tlc** » Tue Sep 13, 2011 12:17 pm

Mikey. I seem to recall reading somewhere that US versions of the J, and therefore I supose K, had different valve lift. Not by much but enough to tune them down by 4 or 5 horsepower.

garyd · #6 PostAuthor: **garyd** » Tue Sep 13, 2011 12:41 pm

If it is down a bit on power, I'm pretty sure it's only the cams.

P.S. As far as I'm aware all the 1100 engines after 83 had all the same internals.....ie the shaft version had the same cams & valves as the Gpz.

I'm trying to confirm this but as yet havn't been able to get hold of the parts catalogue for the non Gpz bikes....

If it's true, it might be worth getting hold of an old shaft engine and chucking the barrels & top end on your J

z1bman · #7 PostAuthor: **z1bman** » Tue Sep 13, 2011 12:44 pm

part no's for inlet + exhaust cam are different on z1000j than those from a z1000k/ltd

mikey · #8 PostAuthor: **mikey** » Tue Sep 13, 2011 8:02 pm

Ok guys thanks for the replies its all gone the melting pot of thoughts as to what i want to do with it.

Mr Puffin · #9 PostAuthor: **Mr Puffin** » Wed Sep 14, 2011 1:26 pm

Mikey the J has 102HP and LTD 92HP, GPZ 108HP, so as said above GPZ cams look like a big plus

mikey · #10 PostAuthor: **mikey** » Thu Sep 15, 2011 5:03 pm

So if i fit the GPZ cams and get rid of the exhaust emission controls will the carbs have to be re jetted?.

brian 1100 · #11 PostAuthor: **brian 1100** » Thu Sep 15, 2011 6:12 pm

I'm interested in this thread, not because I can help but wondering how to get more power out of my Z1100R.
Engine has to come apart this winter to check the crank after a crash.
It's 1170cc, flowed head, PMC race pipe but standard carbs.
Measured as only 87 at the rear wheel 3K miles after the rebuild.
Exactly the same as before it was rebuilt on the same dyno and part of the reason for the rebuild was it was down on power from it's prime (years before I had 98hp at the rear wheel - different dyno but it had lost some kick over the years).
Power curve is very smooth and it carburates perfectly on the road so no obvious reason I can see.

Thinking of Mikuni RS carbs or different cams. Suggestions welcome.

Brian

#12 PostAuthor: **paul doran** » Thu Sep 15, 2011 6:15 pm

remove the emission control before You fit the cams and see what happens

mikey · #13 PostAuthor: **mikey** » Thu Sep 15, 2011 7:57 pm

Ok thanks paul be a while before i start all this but trying to gather as much info as i can before i start

Z1parR · #14 PostAuthor: **Z1parR** » Thu Sep 15, 2011 8:19 pm

Mikey don't be fooled by some of these foolish suggestions of how to go faster , some people will tell you owt :wink:

This is what you need for a no nonesense proven horsepower increase :lol:

I don't know if you knew this but - running an engine with a standard air intake is like going through life with a head cold :roll:

http://www.ebay.co.uk/itm/ELECTRIC-SUPE ... 336wt_1037

z1bman · #15 PostAuthor: **z1bman** » Thu Sep 15, 2011 8:49 pm

just a glorified car heater fan with an air filter stuck on the end nothing but a load of junk

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