2013年10月19日 · What is the difference in the 300 Hirth models 53R, 54R, & 55R ect. Thanks. There are variations of all of them. In general....here is what I have personally found: The …

Rebuilding a 300 Hirth into a MOD motor * * * Here is our subject. It's a Hirth 300 (54R4) that looks to be from a 1968 Snow Prince. * * * We will be making it into a modified 55R1 for a 1969 Panther MOD. * * * Typical grease, grime, and dirt. It has the correct Tillotson HR3A carb, but we will be replacing it with a period-correct HD14A.

2015年9月30日 · I feel that the Hirth 300 is one of the best vintage engines. Of all my vintage sleds, they seem the most reliable, have great power for a small single and are very easy to work on.

2024年12月10日 · Vintage 190r 300cc hirth sled motor. It has a nos piston on it, but needs a cylinder. It needs a few other odds and ends. Good fixable motor, or use it for parts. This motor is being sold as is with no returns. All sales FINAL IF there is additional shipping charges I expect the buyer to cover them. Thanks for looking and have a great day!

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2012年10月15日 · Last year I bought a 69' motoski Capri with a 300 hirth (191r I believe). The sled had been sitting since 1980, but the engine was free and seemed to have good compression. I brought it home cleaned the points, replaced the condensor and set the timing and it fired right up. I rode it quite a bit around the fields last season with no trouble.

2016年4月8日 · Found this Hirth 300cc 2 cycle today, so far from what Ive researched this particular model spanned late 1960s-1970s. Anyone have any info on these? Patrick

2008年3月11日 · Ok people have been asking about the difference between 2 and 3 ring pistons on the hirth 300. They should interchange with no issues. Heres what to look for. THe rings are pinned in place so they don't rotate. This is so the gap …

2023年11月15日 · 1967 panther p15h it has a 300 hirth motor. This sled is a project sled, run and drives but I did the custom look to it. Could be put back to original...

Commonly called a “Hirth 300″, that description fits a number of different models made between 1964 and 1969. Hirth models 52R, 53R, 54R, 55R, 190R and 191R are all 300cc motors and all take the same flat top 75mm pistons. Some pistons are advertised as 300cc pistons but have a …