i got this roller short block motor from a wrecked car and it turned out it was recently rebuilt. not sure if the block was milled or not. i had some rebuilt stock heads that i used on a different motor with a flat tappet cam with no problems that i put on this roller motor with the short roller pushrods. it uses the old firing order. when i torque the stock rockers to 17 it pushes the valves down a fair amount allowing it to lose compression and not start. i loosened the rockers and it cranked and ran good. i ran the number on the cam and i believe it cam from a mid 80's lincoln towncar. is that a roller cam. if not, that could be my problem. like i said, i used these heads on a different motor with a flat tappet cam and it ran just fine. if i do need shims, how would i know which ones i need WITHOUT taking a head off again. it would be the 3rd time. and would a parts store sell these or is it a machine shop thing. if anybody in texas needs a 98 honda 300ex sport quad and has some spare aluminum heads with rockers and everything needed to use them and wants to do a trade, i am up for that.
valve trouble with new motor
- Thread starter dastang2
- Start date
Roland69
Sergeant Tangnet
Damn I wish I had some heads for ya cause I love those Quads. Then agian if I had the heads you want I probly wouldnt want to get rid of them.
http://cgi.ebay.com/ebaymotors/FORD...33617QQitemZ7980247936QQrdZ1QQsspagenameZWDVW
well i went ahead and bought a shim kit just for the hell of it. hopefully it will work. anybody else have any answers.
well i went ahead and bought a shim kit just for the hell of it. hopefully it will work. anybody else have any answers.
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