Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: AshimotoK0 on October 06, 2020, 09:31:02 PM

Title: Anyone see this F2 on eBay ?
Post by: AshimotoK0 on October 06, 2020, 09:31:02 PM
Not sure if this has been discussed altready on here. Anyway a bit of a mystery bike.

https://www.ebay.co.uk/itm/Vintage-Classic-Honda-SOHC-CB750-F2-Barn-Find-Project-V-Early-Frame-No-55-/392957472909?hash=item5b7e17308d%3Ag%3AD-EAAOSwVClfbOUo&nma=true&si=eczi5hJmH6hEhPPTuC5F%252B7ndixE%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
Title: Re: Anyone see this F2 on eBay ?
Post by: UK Pete on October 06, 2020, 10:21:30 PM
Just looks like a standard F2 with earlier engine, not sure what he means by the left front disk, and it being prototype , but given the early frame number who knows, look at all the historic cross over models in the cb range, there is loads of transition bikes , mystery indeed

Sent from my SM-G950F using Tapatalk

Title: Re: Anyone see this F2 on eBay ?
Post by: Bryanj on October 07, 2020, 01:02:13 AM
Hes talking crap, its a standard UK model F2 with earlier engine
Title: Re: Anyone see this F2 on eBay ?
Post by: AshimotoK0 on October 07, 2020, 08:12:06 AM
Hes talking crap, its a standard UK model F2 with earlier engine

It was the the VIN plate I saw that made it interesting Bryan  but of course it could have been swapped from another frame. Honda font stamping look pretty authentic.

Having never owned an F2 was it designatet G in some countries?

[attachimg=1]

Title: Re: Anyone see this F2 on eBay ?
Post by: K2-K6 on October 07, 2020, 08:25:33 AM
Yes Ash, all F2 are G designated as I understand it. So it's a low production number F2 but nothing to say it's not normal run production machine. 

As the others say,  just seems to be F2 with it's original engine missing.
Title: Re: Anyone see this F2 on eBay ?
Post by: Bryanj on October 07, 2020, 09:01:04 AM
When i tried to get an import F2 registered years ago i was told it was only UK F2 that had the G
Title: Re: Anyone see this F2 on eBay ?
Post by: K2-K6 on October 07, 2020, 09:12:25 AM
When i tried to get an import F2 registered years ago i was told it was only UK F2 that had the G

Yes, I'm not certain Bryan but was looking at one that the owner said was brought in from South Africa that had a G Id.  Anecdotal though, so not sure of accuracy.
Title: Re: Anyone see this F2 on eBay ?
Post by: Spitfire on October 07, 2020, 09:59:23 AM
Just looked at the VIN plate on my F2 and it is G, 1000266

Cheers

Dennis
Title: Re: Anyone see this F2 on eBay ?
Post by: Bryanj on October 07, 2020, 02:06:25 PM
The one i was doing came from US but the person dating it said G never was on US bikes so it must have been exported there then re imported, i just took his word for it.
F2 was a nice bike except for those valve guides and no matter what Honda said it had to be a known problem as Fowlers had a lot of sets in stock
Title: Re: Anyone see this F2 on eBay ?
Post by: royhall on October 07, 2020, 02:15:33 PM
Kibblewhite in the USA sell a set of valves and guides via CycleX that fixes the problem. Much harder guides and longer for better valve support.
Title: Re: Anyone see this F2 on eBay ?
Post by: K2-K6 on October 07, 2020, 02:53:49 PM
Three friends had them from new,  all had to have guides replaced.  One still has his original,  think the guides were smoking at roughly 19,000 miles, and head rebuilt by Honda dealer.

You can see and smell the engine oil when following them as they start to wear.

As you say Bryan,  seems to be known about by Honda even before they went out to dealers.  Possibly why they have less oil drain returns from head in the first place.

Suppose they had to send it as last iteration and stop gap as they knew the twin cam was advanced toward production then to replace it.
Title: Re: Anyone see this F2 on eBay ?
Post by: royhall on October 07, 2020, 02:58:53 PM
The replacement genuine guides for the F2 are much harder than the originals but the same part number, they are referred to as Delta parts. Bloody dishonest if you ask me, just so Honda don't have to admit a mistake. The real problem is they cocked up the geometry to fit larger valves and the rockers push the valves sideways causing wear.
Title: Re: Anyone see this F2 on eBay ?
Post by: K2-K6 on October 07, 2020, 03:12:58 PM
I've always thought they are a good looking bike though, especially in blue.

Not that we "raced" on the road officer, ahem, but they are pretty quick from standing start.  My friends one would beat most things then for approximately 1/4 mile, he weighed only 60 kgs and could just launch it faster than most. It'd take a Z1 to beat it over that distance.

Think Honda where caught short with no other bike to develop mid 70s as they'd pushed r&d into goldwing etc. Then saw Suzuki GS coming and panicked a bit.
Title: Re: Anyone see this F2 on eBay ?
Post by: sprinta on October 07, 2020, 05:40:36 PM
I had one in the early 80's.

Looking at the Tax disc it was in 81 when friend and me, on his CB 550, toured in Germany.
Title: Re: Anyone see this F2 on eBay ?
Post by: philward on October 08, 2020, 08:39:05 PM
Its back on
https://www.ebay.co.uk/itm/Vintage-Classic-Honda-SOHC-CB750-F2-Barn-Find-Project-V-Early-Frame-No-55/392969387252?hash=item5b7eccfcf4:g:D-EAAOSwVClfbOUo
SimplePortal 2.3.5 © 2008-2012, SimplePortal