So I watch this video and think 'That is really too quiet'....Then I turned the speakers ON. Impressive, I WANT ONE !
I appreciate very much your work on this engine ... I also like to thank you for sharing your experiences ... I will start overhauling a 1100SR engine these days ... The looks of it will be like when it left the factory, But ... I will definetely go for the Minicooper pistons + conrods ... Are those from the basic 1.6 - engines from 2001 - 2007 those that I want ? I will also do some upgrade on the cylinderhead ... , of course ...None of this was very expensive is the good news. The BMW/Mini pistons and rods are readily available on ebay and the machine work to fit them is just typical stuff. Putting the Honda valves in the head was a bit more of a science project but again, a regular automotive machine shop was able to do the work once I explained the goal.
Let's hear it for the 1.1! I'm betting that an OHV Kadett could be a pretty decent force in vintage racing up against Sprites and such.
What a great read, Thank you for posting it! Very interesting indeed.Since Professor Dremel seems to live in Norway, why not base the build on a 12S or N instead ? More power and torque than from a 1,1 liter. Have you read these ?
WORK ON GM’s SMALL FOUR OF THE 60’and 70’s CONTINUES. BUT THIS TIME ON A LARGER CAPACITY VERSION OF THE ENGINE.pdmclark.co.zaCareful attention to detail in building the ultimate OHV Little Block has resulted in the sort of performance we could only have dreamed of back in the day. The Blydenstein Project Part 2pdmclark.co.za
I have bought 4 of those !!!Hi-
Yes, you want to base model Mini pistons like this one:
2005-2008 MINI COOPER BASE CONVERTIBLE R52. 2002-2006 MINI COOPER BASE HATCHBACK R50. Engine Piston With Connecting Rod. Shown in pictures. No warranty on electric parts. All parts are tested before removal from the vehicle!www.ebay.com
You'll have to bore the block to 77mm and cut the crank journals for the Mini sized bearings. It's not a big change to the crank but make sure your machine shop makes a generous radius at the ends of the journals for maximum strength. The Mini rods are a tiny bit narrower than the Opel ones so they float a bit on the crank journal. I was concerned about this when I built the engine but now that I've run it for months including a full 24 Hours Of Lemons race with this setup I can say it doesn't matter. The pistons sit a tiny bit above the block deck and with a stock 1mm head gasket you end up with a zero squish engine. Perfect fit. Do not deck the block.
As for the head, take a look at Honda K series valves. They are even bigger than the ones I used and can be modified to fit by a good machine shop. Depending on how much you cut down the head for compression you might have to notch the pistons a bit for valve clearance. With the Honda B valves I did not have to notch with a stock cam even after cutting 1.5mm off the head but the K valves are bigger.
Keep us posted on how you do. Just doing the Mini pistons alone will get you solid gains because of their lighter weight and lower friction design. If you can stand to look at a programmable ignition I would use one because once I figured ot out on my car it really helped.
I picked up two engines today; One 1100SR and one 1200 ... I guess I have to build them both ... I will start taking the engines apart tomorrow ...You should put the Mini pistons and rods in the SR engine! You'll get great results even if you do no other modifications. They are much lighter and will last a lot longer. Keep us posted on what you end up doing!