1977 Sparta Buddy/Deluxe Engine

Hey, how can I determine if my Sachs 504 1 is an A or B engine?

Re: 1977 Sparta Buddy/Deluxe Engine

It'll say so on the engine tag. You can also tell by the carb numbers and porting. Sall in the wiki

Re: 1977 Sparta Buddy/Deluxe Engine

Thanks @aaronb i've reviewed this subject on wiki. Unfortunately tag only shows 504/1 however i was able to locate the following numbers 85/10/101 which leads me to believe i'm working with the 'B' smaller carb restricted engine... Would you agree?

Re: 1977 Sparta Buddy/Deluxe Engine

Did you remove the carb and check the metal tag on the block underneath? I have never seen one without the letter designation

Re: 1977 Sparta Buddy/Deluxe Engine

I’ll take a look. Here’s a pic of the engine tag with no letter indicated.

CBA1344B-F40A-4961-A7D7-C16D7EF6C8DC.jpeg

Re: 1977 Sparta Buddy/Deluxe Engine

Huh, yup not a letter.

As far as I know there wasn't a d 504 anyway. Hmmm I believe the second carb number refers to the Venturi diameter. Which would lead me to think that your right. 20 or 25 mph variant....

Although I wouldn't use the word restricted. As 20-25 mph Sachs engines used a completely different jug. They weren't just restricted with a narrow intake and carb like a Puch, but actually engineered slower....sucks

Re: 1977 Sparta Buddy/Deluxe Engine

Yup found it in the wiki

85/10/101 A

Stock on restricted 25mph Sachs models, generally accompanied by a small exhaust header pipe. Main jet #50

Re: 1977 Sparta Buddy/Deluxe Engine

Jeremy Homser /

Your cylinder is an "A" but you have the smaller 10mm carb and probably the small exhaust header. Make an intake spacer to raise the intake about 1/4 of an inch then you can use a 12mm bing from a puch. They are alot easier to work with and they are cheap here on buy/sell.

Re: 1977 Sparta Buddy/Deluxe Engine

Thanks I appreciate the suggestion!

Re: 1977 Sparta Buddy/Deluxe Engine

One follow up question. Any suggestions for replacing the exhaust pipe without having to weld?. Everything i see on treat is 25-28. Unfortunately, has the smaller stock 22 exhaust header currently.

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