View Full Version : re-power for my sled
chongo469
02-13-2008, 02:13 PM
I have 1988 johnson 90HP LS with a jet unit....The powerhead is bad and I am looking at putting a rebuilt powerhead on it.........My question is how difficult of a process is it to R&R a powerhead on one of these motors.....On a scale of 1-10 ....10 being the most difficult......I know a little bit about wrenching, and have the utmost desire to get this sled on the water............any help would be appreciated
chongo469
02-14-2008, 07:32 AM
question answered by boat doc..........thanks again
nobrownline
02-14-2008, 03:21 PM
Pain in the butt. Its a two stroke. If you are going down that far you will want new crank bearings. That takes a press to split the crank and replace. You are talking a total rebuild. You will have to measure the pistons and if nothing else replace the rings.If the power head is overbored you need new pistons and now it keeps getting better.