Originally Posted by
bigmatt
Well, to grizz/matt- I tried changing the bearings on my 7 port today. The engine is not broken in yet but developed an air leak around the front bearing. As you know I asked for help. I got help. I watched the utube video of the guy heating up the block and hitting it firmly on the piece of wood-that did not work for me. In the oven for 45 minutes at 300 also did not work for me. It helped when I used the ofna puller/installer. actually when I do my next engine I will take a heat gun and warm case up that way. what a pain in the ass. I also managed to kiss my ebmodded 5 port good bye. I am totally to blame for this one. c clip pooped out ruined every thing except for the crank. which by looking at it must have already pretty much gone when I replaced the wrist pin con rod. It fit good when i installed because it was ovaled. Had I mic'ed it I would have known. Newbie mistake. One other lesson I have learned never buy used engines or electronics. So as soon as I let the sealant dry on this engine I am going to check for leaks and hopefully I will have to stock 7 ports that I can use until the new go engine line comes out. All in all I am glad I tried this only because I learned something.



all at the same time.
Wow

you had a couple of bad days there mate !!! Did you get the bearings out in the end with the OFNA tool and heat gun ? They can be tight sometimes, a bit like the sleeve senario. Some come out, others don't.
That is the beauty of the GRP puller I keep going on about (the one we can't afford

). It has a set of expanding fingers that screw out and grip the inner race of the bearing. You can then pull the bearing out cold if you need to

but I wouldn't. I have just ordered the OFNA puller last night after giving it some thought. I just can't justify around 300 of our dollars on something I might only use a few times a year.
That's sad about the EB Mods too. BUMMER. Never mind, a stock 7 Port with .3 or .4 mm of head shims fitted (25%) and a 2072 will be more than competitive