coulsea's latest activity

A very enjoyable thread. I recently had a comment to one of my posts about my way being unnecessary ( no i am not offended) and it made...

This is what I use. to get the curved holes I drill the main hole (6mm) 6mm in from the end which will leave 3mm of metal between it and...

The first time I used O rings I thought that two must be better than 1, it would lock solid after a few turns.

Jasonb. I have changed my spreadsheet to use your 1.4 for module 1 or less and it will change to 1.25 above module 1. It is a small...

I get 2.25mm depth of cut using my spreadsheet.

good work. Be patient it will improve as it runs in, particularly the valves. It will start and run at lower speed once it is run in and...

Back when I was a school kid messing around with motor bikes the local motor cycle wrecker said to set the valves rocking at top dead...

I Agree the best way to seat valves and get rid of tight spots is under fire. it sounds like you were nearly there, put the throttle in...

A bit more clearance in the intake rocker will make the intake valve open a bit later to avoid overlap or move the cam one tooth so that...

These engines are meant to run, not set the standard for horsepower or fuel efficiency. you have quite a bit of leeway when it comes to...

Model IC Engines (john-tom.com) 3rd one on this page is the webster, lots of builds on this forum. not free but not expensive, the red...

The carb should suck not blow. valve timing being out by 1 degree is insignificant. as long as the exhaust valve closes at or just...

Looking back at your video I notice that you don't touch the carby. I have tried those carbs and found that they don't function like...

My battery drill will not start a new engine, just not fast enough (1200 rpm should work), if you have leaks in the valve block, valves...