3 replies to this topic

[mab01uk]

To fit a 1275 auto block to a manual, apart from drilling the dipstick hole, there are a few mods needed to oil plumbing:
1. Auto block doesn't have the drilling all the way from the oil pump to the relief valve.
2. Auto block has 2 holes in the relief valve seat `cotton reel' to let oil get into the main gallery, because the normal filter flange is blocked off with a plate- the motor's lube oil comes UP the banjo pipe from the auto trans to the motor.
3. Auto block pump mounting recess is .250" deeper than in a normal 1275 block.

AusMini Link:-

http://www.ausmini.c...hp?f=25&t=90470

 

[DeadSquare]

Very interesting.

 

Good photos and description.

 

Well done.

[bpirie1000]

https://minisport.co...p-adapter-plate

Found this adaptor palte by accident may be of use to someone...

[Spider]

I've converted quite a few Auto Engines for Manual use.

 

The spacer plate is best made from steel and not aluminum as shown in that guide. When Aluminum is used, the drill will want to wonder in to the softer material and can easily break out in to the pump gasket face of the spacer plate. It's all scrap at that point.

 

I also put a couple of threaded holes in the spacer plate so it can be removed, often needed when doing the conversion for de-burring and cleaning and sometime later needed for cleaning. The spacer plate needs to be an interference fit in to the block.