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by allan burgess
Sun Jun 16, 2019 11:23 pm
Forum: Four stroke
Topic: Square Four MkI restoration complete - almost....
Replies: 72
Views: 4190

Re: Square Four MkI restoration complete - almost....

check the compression have you got compression on all cylinders are you using NGK plugs? if so? they soot up very fast a poor starter with sooty plugs allows the petrol to collect on the plug, clean the plugs and try easy start instead of the choke, when mine starts the 4g is first kick and the Mk1 ...
by allan burgess
Thu Mar 21, 2019 5:52 pm
Forum: Four stroke
Topic: Sq4 1938 frame wanted ansty + Forks as well
Replies: 6
Views: 576

Re: Sq4 1938 frame wanted ansty + Forks as well

I have not as yet needed to replace the taper tubes. I have so far made extended wheel lugs That compensates for The tubes when they corrode, Ive found its the bottom 1/2 inch that goes rusty. with a remade lug thats a little longer its easily over come . I have taken the time to source the wheeling...
by allan burgess
Sun Mar 17, 2019 5:50 pm
Forum: Four stroke
Topic: Sq4 1938 frame wanted ansty + Forks as well
Replies: 6
Views: 576

Sq4 1938 frame wanted ansty + Forks as well

Needed for current project I have a complete engine gearbox transmission restored and running but its in the wrong frame I can repair retube even the most battered and bent frames I only draw the line at making all the lugs as well . also a set of girder forks is required Again I can retube them and...
by allan burgess
Wed Jan 02, 2019 9:39 pm
Forum: Four stroke
Topic: 4G Conrod Advice
Replies: 23
Views: 2035

Re: 4G Conrod Advice

I put new club rods on my restored 38 sq4. I sent back to Bruce the metalled rods out of the 38 4G, Bruce rejected them and asked for shell bearing ones If I wanted the discount. He sent back the 38 4G rods and I sent a set with shells ? I did not understand.? If we are scrapping the Rods why is it ...
by allan burgess
Thu Dec 20, 2018 1:16 am
Forum: For sale/wanted - Parts
Topic: mainshaft GB7 and final drive gear
Replies: 1
Views: 371

mainshaft GB7 and final drive gear

wanted SQ4 GB7 gearbox mainshaft and final drive gear for 1952 MK1SQuare four
by allan burgess
Fri Dec 14, 2018 1:59 am
Forum: For sale/wanted - Parts
Topic: Re: 350 nh
Replies: 3
Views: 497

Re: Re: 350 nh

talk to Martin Emery west riding branch he makes them
by allan burgess
Wed Nov 28, 2018 6:13 pm
Forum: Four stroke
Topic: Sq4 frame conversion from ?
Replies: 10
Views: 793

Re: Sq4 frame conversion from ?

Thank you Next question I have two restored engines transmission etc with another on the bench a cast iron 1938 4g and two mk1's from 1951 From what I recall in conversations at Rallies the swinging arm frame has to be altered to take a sq4 engine I recall that the top frame tube is extended by 2&qu...
by allan burgess
Wed Nov 28, 2018 1:59 pm
Forum: Four stroke
Topic: Sq4 frame conversion from ?
Replies: 10
Views: 793

Sq4 frame conversion from ?

Dimensionally are the swinging arm frames 350 500 singles and huntmaster all the same Or do I search for a particular model to find a donor frame
by allan burgess
Sat Sep 29, 2018 12:58 am
Forum: Four stroke
Topic: Square Four MkI plain bearings
Replies: 9
Views: 699

Re: Square Four MkI plain bearings

IF YOUR TIMING SIDE MAIN BEARINGS HAVE BEEN LINE BORED YOU SHOULD NOT HAVE TAKEN THEM OUT RE-INSTATING THEM IN A DIFFERENT POSITION WILL CANCEL OUT THE LINE BORING EXERCISE . LINE BORING ? WHY ? --THE CRANKCASES DISTORT WITH USE . I HAVE THE TOOLING TO DO IT E-MAIL ME DIRECT IF YOU REQUIRE ASSISTANC...
by allan burgess
Tue Jun 19, 2018 1:09 am
Forum: For sale/wanted - Parts
Topic: !!WANTED!! Sq4 mk1 crankcase
Replies: 2
Views: 444

Re: !!WANTED!! Sq4 mk1 crankcase

I have a pair undamaged how much will you give me ? I also have a pair that require a small welding job on the latice brace which I can do . or you could.? again how much will you give ? there's a member from NZ after cases as well.

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