KLE500 tuning to GPZ500 specifications

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Right. There are at least ten equines lurking somewhere inside my KLE engine. The bore, stroke, compression ratio and valve diameter are the same as the GPZ. The KLE has 50 ponies, the GPZ has 60 ponies as standard. This leaves only a few places for them to hide.

I have a spare GPZ engine, it would be rude not to try Mr. Green

I know the carbs are different, got a pair of GPZ ones.

I reckon the cam profile is different (if only by the differing power delivery between the two engines). I checked the manual and have a procedure for changing out the cams without removing the head and camchain.

This leaves what?

Exhaust? Got that covered, there are nae baffles in the one I have.
Filter? Both have a foam element filter.
Airbox? The KLE one is massive.

Ignition timing? Thinking

Not so sure about the ignition timing/mapping. The IC Igniter has the same number of wires but in different colours/orders. I can make a 'crossover' block to make them land up in the same place without butchering the loom. I wonder if this is all or if the ignition is mechanically advanced on the GPZ too?

Any thoughts? Anything I missed?

(This will be by way of a 'do it sometime when it is lighter and I am bored' type project.)
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

extreme3d · World Chat Champion Joined: 27 Dec 2004 Karma :

If the GPZ has more power per stroke then it stands to reason that the counter balance required would also be more so make sure they are the same to.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Would not surprise me if the ignition timing is different. Use shorter HT leads so the sparks do not have to travel as far, to advance the timing Laughing

.

Wonder if you could rig up a video camera and a timing light to check what the timing is doing as you rev the engine.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

MikeH · Brolly Dolly Joined: 10 Dec 2005 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

map · Mr Calendar Joined: 14 Jun 2004 Karma :

veeeffarr · Super Spammer Joined: 22 Jul 2004 Karma :

Tell that to my CG please.

MikeH · Brolly Dolly Joined: 10 Dec 2005 Karma :

extreme3d · World Chat Champion Joined: 27 Dec 2004 Karma :

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

feef · Energiser Bunny Joined: 11 Feb 2002 Karma :