Author Topic: help needed cb 750 s plate 79 ?  (Read 408 times)

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mark73

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help needed cb 750 s plate 79 ?
« on: June 26, 2010, 10:14:01 AM »
hi ive bought my 1st honda cb 750. Theres a few things i need to know, and need help with. the bike has k and n air filters. the exhausts are non standard straight through drag pipes 4 into 4. The seller said the carbs need setting up properly..can they be adjusted to suit ? by messing with the air/mix screw ?
or as someone else mentioned, the standard jets are 105, and will need either 110 or 120 jets. which is correct ? the carbs have been cleaned so thats not the problem..

2nd question..I want to change the oil. which grade is best to use. ive been told mobil racing 4t ? but thats 20w/50. i thought cbs were 10w/50 ?
also could i use 5w/50 synthetic ?
how hard is it to fit a  new oil filter ? their situated at the front of the engine at the botom ? where the bolt is ? i dont mean underneath the engine..where the oil drains out.

sorry for the dumb questions..its my 1st big bike, not into plastic bikes..was brought up around laverda jotas, trumpets, ect !!!

cheers mark

Offline Stev-o

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Re: help needed cb 750 s plate 79 ?
« Reply #1 on: June 26, 2010, 12:34:55 PM »
Yes, your cars will need to be rejetted since the airbox was removed and exhaust changed.

Try the search box for the other questions you have, they have been discussed numerous times before:
http://forums.sohc4.net/index.php?action=search2

 And you won't have to wait for an answer.

And also read the FAQ forum, there is a wealth of info there:
http://forums.sohc4.net/index.php?board=11.0

Good Luck.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........