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by T.J.Falloon
Fri Jun 12, 2020 4:22 am
Forum: Four stroke
Topic: GB Gearbox
Replies: 3
Views: 145

GB Gearbox

Hello again brains trust, I am hoping someone here can clarify an issue that I am having with a mates '52 Mk2 Square Four. I am presently in the process of replacing the sprocket seal and front cover gasket on the gearbox and an array of other gaskets to fix some oil leaks. The gearbox is a Burman G...
by T.J.Falloon
Tue Jun 02, 2020 4:41 am
Forum: Four stroke
Topic: Mk1 Sq 4 Carb
Replies: 21
Views: 704

Re: Mk1 Sq 4 Carb

Hi everyone, Thank you for all your responses. Certainly looks promising and will make a bid, but before I do, isn't the mounting flange in the wrong plane (vertical) instead of horizontal, or is the carb supposed to be mounted on it's side, or am I just looking at the thing completely the wrong way...
by T.J.Falloon
Fri May 29, 2020 1:06 am
Forum: For sale/wanted - Bikes
Topic: WANTED ; CARB TOP FOR SOLEX BI-STARTER CARB
Replies: 1
Views: 157

WANTED ; CARB TOP FOR SOLEX BI-STARTER CARB

HI,
I am after the top section of a Solex Bi-Starter carb for my '51 Mk 1 Sq 4. If anyone has one spare could they please contact me.
Photo for reference.
by T.J.Falloon
Tue May 26, 2020 9:53 pm
Forum: Four stroke
Topic: Mk1 Sq 4 Carb
Replies: 21
Views: 704

Re: Mk1 Sq 4 Carb

Thanks everyone for your responses. I have tried stretching the spring but that does not seem to have made any difference. It is a new cable and routed smoothly. Currently running a 220 main, but may try a 230 or 240 as it's running a smidge lean. I will look to see if I can find an H type carb from...
by T.J.Falloon
Tue May 26, 2020 7:44 am
Forum: Four stroke
Topic: Square four mk1 frame
Replies: 23
Views: 930

Re: Square four mk1 frame

Hey Fletch, Welcome to the group and good luck with your restoration project. I have a '51Mk 1 Sq 4, which I have recently got back on the road. I would not have been able to do this without the support and infinite knowledge of all here on this site. I completely stripped my engine , cleaned out th...
by T.J.Falloon
Tue May 26, 2020 1:58 am
Forum: Four stroke
Topic: Mk1 Sq 4 Carb
Replies: 21
Views: 704

Mk1 Sq 4 Carb

Hey all. After some more info / help please. Got my 1951 Mk1 Sq 4 back on the road and running sweetly apart from the carb. I am currently running an Amal concentric as supplied by Dragonfly and am having what seems to be ( according to forum posts ) the normal problem of the slide sticking. Which i...
by T.J.Falloon
Sun Apr 05, 2020 2:41 pm
Forum: Four stroke
Topic: Mk 1 Sq 4 Valve timing.....again
Replies: 8
Views: 415

Re: Mk 1 Sq 4 Valve timing.....again

Hello all, Thank you all for your support and sharing of knowledge. It is truely appreciated. Thank you Richard for your patience and talking me through the process, as you stated very easy. And yes I was over thinking it Guy. I pretty much ended up doing exactly what you described. I do have the su...
by T.J.Falloon
Sun Apr 05, 2020 1:22 am
Forum: Four stroke
Topic: Mk 1 Sq 4 Valve timing.....again
Replies: 8
Views: 415

Re: Mk 1 Sq 4 Valve timing.....again

Hey guys, Thanks for your responses, I appreciate your time. Roger, thanks for you info. Yes I did have the bike running and it ran beautifully. However the leak was really annoying. I know I am probably being a bit paranoid but I want to make 100% sure I have the valve timing right. Last time I was...
by T.J.Falloon
Sat Apr 04, 2020 11:56 am
Forum: Four stroke
Topic: Mk 1 Sq 4 Valve timing.....again
Replies: 8
Views: 415

Mk 1 Sq 4 Valve timing.....again

Hello brains trust, I have had to dismantle my Mk 1 Sq 4 again due to an annoying oil leak between the crankcases. This has now hopefully been resolved by my machine shop lapping the two cases. I have reassembled the bottom end and have fit the barrel. After talking to my machine shop they suggested...
by T.J.Falloon
Wed Mar 04, 2020 2:57 am
Forum: Four stroke
Topic: Head torque
Replies: 6
Views: 443

Re: Head torque

Thanks all for your input. Appreciate your help.

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