Thread: GP1390R build
04-30-2012, 02:17 PM #1
Since the old 1200 was toast, i decided to rebuild a 1390cc:
Gained the most info on this forum, GroupK, and WFO, starting to like this hobby!
This is so far the build:
87mm GroupK pistons
bored, ported, and replated cylinders
GroupK milled head
Modified powervalves with waveeater clips and connectors
Hotrods crank, welded and trued
open air filter
R&D intake grate
Rebuild pumpbearings with thrust bushing
Last edited by Julian; 06-15-2012 at 03:02 AM.
04-30-2012, 02:20 PM #2
04-30-2012, 02:23 PM #3
04-30-2012, 03:10 PM #4
05-02-2012, 09:15 AM #5
Was at work today, and placed new bearings in the jetpump, with thrustbushing.
Used eurol marinegrease for this, is it normal that is feels like it has more resistance for now?
Should i use special grease?
___ added gearring oil, ended up with a smoother slurrie/ problem solved ________
Last edited by Julian; 05-05-2012 at 03:32 PM.
05-05-2012, 03:37 PM #6
05-05-2012, 03:42 PM #7
05-05-2012, 03:49 PM #8
05-06-2012, 04:43 AM #9
05-06-2012, 04:45 AM #10
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