A Few Bottom End Rebuild Questions...

[Jer309GTi 3]

I recently bought an Mi16 engine for my 405

 

The head has been rebuilt so I don't need to touch that. I bought the block knowing that it needs new piston rings, and while it is apart I am going to change the big end and possibly main bearings.

 

Is there anything else that would need to be changed while I'm building it? The list I've got so far is:

 

Big end bearings

Main bearings (is it worth doing these?)

Headgasket

Headbolts

 

As the head has been removed I can't be sure that the crankshaft hasn't turned so would it be worth me taking the liners out and putting new o-rings on just in case they have moved?

 

The water pump is new.

 

Cheers

[B1ack_Mi16 67]

If you change the pistonrings, you should get the liners hooned first.

It might just be they're too worn to just have a re-hone, so that's 4 new liners.

 

Also I think you should change the rodbolts, but I'm not 100% sure about this.

Anyone know if the rodbolts can be re-used?

[pug309twin40s 1]

liners will just need a quick re hone. Liners wont need replacing as there was virually no lip on the top of them etc.

 

change the main bearings at the same time while doing the big ends bearings.

 

 

 

 

speak to QEP mate and tell him your a member of 205forum and get the bits from there. get discount and good prices.

 

 

 

p.s this was my engine.

[Jer309GTi 3]

Yeah, I was quite impressed with the lack of wear on the liners I'll get on the fone to QEP next week and sort out some bits.

Paul, on the head was that damage between the waterways on No. 2 cylinder there when QEP did the head or did that happen after? Just wondering if it mattered, wouldn't have thought so cos it's between 2 waterways

[pug309twin40s 1]

yes mate that tiny little bit of corrosion was there before the cyl head went to QEP. nothing to worry about.

[Jer309GTi 3]

Didn't think so, thanks for that Hope to start stripping the engine this week.

[pug309twin40s 1]

ah cool. when you hoping to have it running in the 405?

[Jer309GTi 3]

Hopefully in a couple of months time. It's a bit complicated, we've just put a new engine in the Triumph (our rally car) so once that's running I can use that and then sell the 306 which will pay for the engine rebuild! My g/f is having my 205.

[pug309twin40s 1]

hows the engine progressing mate?