Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
1600 vs 1641. What is the difference in cooling and power?
I am building a new engine for my 1967 bug this weekend so I thought I would ask others with experience what engine they prefer in a daily driver full body sedan and why. I would like answers form people who do their own work on their air cooled VWs. I realize that someone who has a 1641 installed at a shop to replace their old worn out engine will think the 1641 has a lot more power due to the fact that the old engine was tired.
Thanks.
1 Answer
- 9 years agoFavorite Answer
The power gained from a 1641 in nominal. a rebuilt 1600 (1584) and a new built 1641 with perform almost identically. just slightly larger slip in jugs and pistons. the larger the cylinder bore the thinner the cylinder wall. but getting only about 15cc per cylinder... so the its not going to be noticeably thinner and will definitely not cause any cooling issues.
are you rebuilding your stock 67 block into a 1641 or a 1600? the 67's (USA spec) should be 1500 which are very easily built into a 1600-41 with slip in jugs. you will however notice a difference between a 1500 and a 1600.
If you want to see more power out of them you need to adjust at the very least the carb jets. larger main and idle jets in a stock carb or upgrade to a 2 barrel weber. thats the the only way you will notice more power.
I think the 1641 are popular because a lot of aftermarket companies make them and they are cheaper than German made OEM 1600 replacement parts
Source(s): 1970 Daily Driver Bug 1975 Restored Bug 1963 Karmann Ghia Project