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by pauldridge
Sat Feb 09, 2019 2:10 am
Forum: Four stroke
Topic: new Sq 4 Mk II rebuild is running lean
Replies: 8
Views: 1426

Re: new Sq 4 Mk II rebuild is running lean

Thanks to Paul Jameson for the suggestion to solder a piece of brass rod to the idle mixture adjust screw. I found a rod at my shop the perfect diameter to hammer into the screw slot, and successfully soldered it into place. With the carburetor off, I learned that, during my carb "overhaul"...
by pauldridge
Wed Feb 06, 2019 12:36 am
Forum: Four stroke
Topic: new Sq 4 Mk II rebuild is running lean
Replies: 8
Views: 1426

Re: new Sq 4 Mk II rebuild is running lean

Thanks Simon and Paul.. This carburetor functioned flawlessly on the previous engine, before my dreaded thrown rod episode, and I haven't changed jets in the interim. Tomorrow I am going to pull the the carb and re-check that all jets are clear. I did disassemble and run it through the ultrasonic wa...
by pauldridge
Tue Feb 05, 2019 9:14 pm
Forum: Four stroke
Topic: new Sq 4 Mk II rebuild is running lean
Replies: 8
Views: 1426

Re: new Sq 4 Mk II rebuild is running lean

Thanks Paul.. I was trying to determine a scheme to get in there without permanently branding myself!
by pauldridge
Tue Feb 05, 2019 7:18 pm
Forum: Four stroke
Topic: new Sq 4 Mk II rebuild is running lean
Replies: 8
Views: 1426

new Sq 4 Mk II rebuild is running lean

Just finally got my MK II back together again after a long and expensive 2.5 year rebuild. Mine is a '53 with Solex carb. The engine runs very nice.. smooth, no dead spots in acceleration, and ticks over at 500-600 rpm. However, it seems to be running hot, confirmed by brown coloration on the exhaus...
by pauldridge
Sun Dec 30, 2018 1:24 am
Forum: Four stroke
Topic: Square Four Push Rods
Replies: 31
Views: 3917

Re: Square Four Push Rods

I encountered a similar problem with my '53 Sq 4 MK II.. after head rebuild, I discovered that a couple of the collets were noticeably larger than the others, causing the valve tip to protrude higher than it should. With guidance from my US guru, Paul Ackerman, it was determined that I needed the la...
by pauldridge
Sat Dec 22, 2018 6:12 pm
Forum: Four stroke
Topic: Square 4 MK II Engine Assembly/Installation Notes
Replies: 0
Views: 644

Square 4 MK II Engine Assembly/Installation Notes

At the conclusion of a trying 2+ year rebuild of my Square 4 engine, it is finally all together and in arguably better condition than factory new. I have departed notably from the Waller "bible" regarding piston installation and engine installation in the frame (mine went in all in one ful...
by pauldridge
Wed Dec 19, 2018 1:52 pm
Forum: Four stroke
Topic: Seeking David Jones and Solex gaskets
Replies: 9
Views: 1723

Re: Seeking David Jones and Solex gaskets

How about posting a picture of that connection Dave?
?
by pauldridge
Tue Dec 18, 2018 10:04 am
Forum: Four stroke
Topic: Seeking David Jones and Solex gaskets
Replies: 9
Views: 1723

Mk II Oil Pressure Gauge

Hi Klaus, In my research, mostly on this forum, I've seen some, honestly, Godawful hookups for external oil pressure gauges on our bikes. Most look like they were cobbled together with components from the local hardware store parts bin. I had been very pleased with the gauge kit I purchased for my N...
by pauldridge
Sun Dec 16, 2018 11:52 pm
Forum: Four stroke
Topic: Seeking David Jones and Solex gaskets
Replies: 9
Views: 1723

Add on Oil Pressure Gauge

At fear of hijacking this thread.. here is the guy who sells these oil pressure gauge kits, including specially milled banjo fitting just for the Ariel. this is the eBay listing for a Triumph as example. I have the same gauge installed on my Norton Commando and it works beautifully: https://www.ebay...
by pauldridge
Sun Dec 16, 2018 11:46 pm
Forum: Four stroke
Topic: Seeking David Jones and Solex gaskets
Replies: 9
Views: 1723

Re: Seeking David Jones and Solex gaskets

Hey thanks Simon.. As your message came in, ironically I was reviewing your wonderful blog on your restoration experiences, and reminding myself on the pre-oiling technique as well as bleeding the Morgo... I like your idea of using a drill to turn over the crank for oil pressure. I have a beautiful ...

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