Model Holt 4 cly engine questions

[Capt,n John]

Is there anyone out there that has built or own a Model Holt 75 engine. I have a few questions about this engine. Thanks John

 

[johanvanzanten]

Hi John,

I made this engine many years ago from from the original drawing but without the use of castings.
It was a good runner but had serious problems with the lubrication. I discovered the source of the problem after I had sawn the model.
Perhaps I can answer your question. Please see my photo's for inspiration.

Regards,

Johan.

 

[Capt,n John]

Thanks for posting your photos. My Holt has a different heads. What scale is your engine? Nice job you done on it. Best Regards, Capt,n