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Monday 9am - 5pm Tuesday 9am - 5pm Wednesday 9am - 5pm Thursday 9am - 5pm Friday 9am - 5pm

Barrington Motor Works

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Barrington, NH
Barrington Motor Works

Barrington Motor Works shares your love for vintage BMW motorcycles and is ready to help you get you

Barrington Motor Works was founded in 1999 by Chris and Barbara Betjemann. Their goal was to share their knowledge and skills gained from 40 years of riding and wrenching with the vintage BMW motorcycle community by offering high level restorations and services. After close to 10 years restoring and servicing vintage BMW motorcycles the Betjemanns undertook the project of compiling all they had learned from the work performed at Barrington Motor Work into a comprehensive manual for BMW R50-69US. With input from others the first Barrington Motor Works R50-R69US Restoration and Service Manual was born. Since its inception Barrington Motor Works has been leading the way to bring knowledge and skill to the vintage BMW motorcycle community. Now in early 2019 ownership of Barrington Motor Works has been passed on to long time friend and employee, Andrew “Ande” Kahora. After attending motorcycle-specific technical training for two years, Ande worked for BMW dealerships for five years. Having worked for Barrington Motor Works for several years, Ande has refined his knowledge and skills with vintage BMW motorcycles and will continue to offer the high level of quality work for which Barrington Motor Works has become known.

11/02/2026

The wait is over, Part 2 of the transmission rebuild with Barrington Motor Works is live! Tune in today on the BMW MOA YouTube channel.

10/29/2026

Expanding our comfort zone! 1932 BMW R11.

10/26/2026

Welp, finally got all my calls, emails, and dr appointments done...first job: Horn function.

I love working on these old horns. Getting them fixed is usually a combo of cleaning points, proper paper shims, and careful adjustment!

By the way, Henry Atsma ...your horn arrived!

10/23/2026

Bye Felicia!

10/23/2026

10/22/2026

10/07/2026

We have our first customer enjoying our discounted labor rate on component work!

This here is a four speed gearbox off an R68. It will be media blasted and rebuilt with new bearings, seals, and all other appropriate parts for its age and model.

Remember to contact us for your vintage BMW component needs this fall/winter. Mention this social media post and receive a 15% discount on labor!

10/07/2026

With any new set of pistons need to have the ring gaps check against the bored cylinders.

Step 1 - Carefully remove the rings using a piston ring expander tool. Start with the top ring and move down.

Step 2 - Marking the rings during removal can be helpful and observing the "up" and "down" orientations.

In case you forget to mark the rings, don't worry. Most rings have defining characteristics that help identify which wring they are.

The top ring (compression ring) has a taper on the upper backside. This taper helps guide compressive gasses to the backside of the ring and promote sealing against the cylinder wall.

The 2nd ring (scrapper ring) have a shoulder on the lower outside edge. This ring aids in the removal of oil from the cylinder as the piston moves down the cylinder towards bottom dead center.

The 3rd ring (oil ring) is the most obviously different ring out of the three. It is thicker and has large holes in it to help distribute oil around the cylinder as it moves up and down.

Checking the ring gaps.

We aim for approximately 0.010" as a minimum. Of course any gap substantial larger will cause problems. There are formulas that can be used to establish the specific ring gap for any given cylinder and piston, but we aim for no less that 0.010" for each ring.

These gaps are adjusted as needed using a grinding tool that removes material from both ends of the ring to keep them level.

Hope this helps!!

Address

1892 Franklin Pierce Highway
Barrington, NH
03825

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm

Website

http://www.barringtonmotorworks.com/

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