Author Topic: Keihin pwk 39 jetting help (Read 1003 times)

Jake87 · « **on:** May 31, 2013, 03:07:02 pm »

Hi everyone great forum i did a search couldn't find a pwk setup

Need to know a starting point for jetting
89 zilla
40 over no port work
no air box lid
fmf pipe

Currently the pwk 39 has
175 main
60 pilot
6 slide
dgh needle

thanks in advance for any input

Dezsled · « **Reply #1 on:** May 31, 2013, 05:19:39 pm »

'88 cyl mid to top end porting
0-50' above sea level so cal
Cut power head 57 cc
Stock reed
No lid
HPR 19 pipe

180 main
58 pilot
6.0 slide
dgh needle
4th clip from the top

I'd say your close, maybe for safety sake put in a 178 main , clip in the middle of the needle ... Adjust for your conditions

Jake87 · « **Reply #2 on:** June 01, 2013, 07:39:18 am »

Ok thanks just wanted to make sure before i started kicking lol

DMoneyAllstar · « **Reply #3 on:** June 10, 2013, 09:24:57 am »

To add to the list, I'm at...

'88 small reed engine
PWK39
PTR pipe
FMF silencer
stock reeds
Pro-Design head 52cc
.040" overbore
UNI filter
Air box lid has 8 holes 1/2" ID
Absolute sea-level (black swamp of NW Ohio)
50/50 mix of 110 Sunoco race gas and 93 pump
32:1 mix w/ Amsoil Dominator syn

180 main
60 pilot
#2 clip
6.0 slide
dgh needle

Starts easy (for a Zilla), idles for days, revs throughout, and not much throttle hang at all. Makes a nice chocolate brown plug chop for me, too.

-D$

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Author Topic: Keihin pwk 39 jetting help (Read 1003 times)

Jake87

Keihin pwk 39 jetting help

Dezsled

Re: Keihin pwk 39 jetting help

Jake87

Re: Keihin pwk 39 jetting help

DMoneyAllstar

Re: Keihin pwk 39 jetting help

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