Gt750j project

Here you can write about your restoration highs and lows and hopefully final success
Post Reply
Faststeve
Posts: 83
Joined: Sat Nov 17, 2018 5:04 pm

Re: Gt750j project

Post by Faststeve »

IMG_20200205_110404_BURST001_COVER.jpg
IMG_20200205_133923_BURST002.jpg
All done 1 thou taken off top and bottom
On cnc.
Hope this is the last
Steve
steve2582
Posts: 6
Joined: Fri Sep 27, 2019 11:02 pm

Re: Gt750j project

Post by steve2582 »

bars leaks ,worked on mine after engine rebuild was sceptical at first as it was atotal rebuild all new gaskets seals etc and still leaked ,advice from here to bars leaks and no water worries now for three years
Faststeve
Posts: 83
Joined: Sat Nov 17, 2018 5:04 pm

Re: Gt750j project

Post by Faststeve »

Looking at new indicators on ebay
Has my ones r naff
Any recommendations or is there
Any nos about.
Thanks Steve
barney01
Posts: 3118
Joined: Wed Sep 26, 2012 7:33 pm
Location: Prestatyn.Wales

Re: Gt750j project

Post by barney01 »

NO SMOKE .......NO POKE
User avatar
Alan H
Posts: 12104
Joined: Fri Aug 05, 2011 6:38 am
Location: Wombwell, Republic of South Yorkshire

Re: Gt750j project

Post by Alan H »

Faststeve wrote: Fri Feb 07, 2020 11:27 am All done 1 thou taken off top and bottom
I had some +1mm L barrels on the Hippo after the full rebuild, and the head gasket blew twice before Baz & I found out the barrels had been decked. 1mm off the bottom gave 150psi static compression. The engine was difficult to start (hard to turn over) and vibrated badly over 5k rpm. Ended up with a +1mm set of A barrels and comp down to 120psi as normal, so check before you run it!!
Last edited by Alan H on Sat Aug 15, 2020 10:00 pm, edited 1 time in total.
Proof that four strokes are over complicated
Faststeve
Posts: 83
Joined: Sat Nov 17, 2018 5:04 pm

Re: Gt750j project

Post by Faststeve »

Thanks Paul
Will do a comparison test.
But I think engine is fine now
All back in bike
teazer
Posts: 1035
Joined: Mon Mar 07, 2011 8:10 pm
Location: Chicago

Re: Gt750j project

Post by teazer »

120psi is really low. Mine used to be 165 until I raised the exhaust ports some more and they came down to 155 which still works well.
Post Reply