5 replies to this topic

[Mini-dude]

I am just curious what option people would go for the most given the chance do it and why

Options:

1: K1100 or K1200 head

2: Pro-motive R1 kit

3: Honda engine conversion 

Edited by Mini-dude, 19 August 2023 - 03:29 AM.

[stuart bowes]

Probably the Honda, because its been done more than enough times for the info to be freely available, engines are a dime a dozen, subframe kits are out there, and once you've got over the work to install it properly (which I'm sure is not to be taken lightly) it will just run and run all day long without reliability issues.

Arguably that changes it to the point where its 'not really a mini any more' but I guess that's up for debate. On 13s it won't handle the same, and it'll be front heavy i suppose?

Edited by stuart bowes, 19 August 2023 - 05:57 AM.

[DeadSquare]

If you really, Really, REALLY, want a Mini, then there is only one option, swapping the cylinder head;  although that won't really be a swap, as you have to cut valve recesses in the piston crowns and can't go back because you will have moved 7 head studs.

 

By all accounts, the Pr0-Motive is well engineered, but like fitting a Honda engine, is a lot of work, and at the end of it all, you no longer have anything but a mini shaped car.

 

Better to either drive a Honda or fit an R1 into something more aerodynamic.

[bpirie1000]

R1 is a proper screamer. My one was just not practical as a daily kind of car. Revs need to,be high and the sequential bike box seams ace but setting up can be problematic...


Also the chain drive was a bit of a pain greasing everything.
Would also,say the bike engine is not meant to drag the weight of a mini about.

I would say k100 twinncammwould,be the best of both worlds., can get 100 brake horse power out of one if you are methodical enough.. depends on your ability really can get a nippy little 1380cc with a good cam and distributor

Either way mini shapped is the way to,be.

[whistler]

A 7 port head would be my choice. Far simpler than the other options and plenty of power on tap. A friend of mine has a K100 headed 1380 and a 7 porter 1380. About the same power output from both.

[Java_Green]

A 7 port head would be my choice. Far simpler than the other options and plenty of power on tap. A friend of mine has a K100 headed 1380 and a 7 porter 1380. About the same power output from both.

Who would not like to be in your friend´s shoes....

Edited by Java_Green, 21 August 2023 - 09:02 AM.