15 replies to this topic

[eric.sen]

Hello,

I need some help because I will change my head gasket in a few weeks.

So it will be the chance for modding/tuning it a little to get a few little more horse power of my MPI !

 

Can you tell me what to do :

skimming to head ? And how many ?

Polishing  / porting the head ? Difficulty ? Time with a dremel ?

 

Wich head gasket  (AF460 / BK450 / TAM1521 or other) ?

 

Thanks for the help

 

Eric from France.

 

[eric.sen]

And also if there is parts to change ?

 

Valve guides , springs ....

[jamesquintin]

I ruined a head once tryng to port it myself.

 

Probably best to get a stage 3(?) head, LCB and 1:5 roller rockers. Oh and a fuel pressure regulator. Basically what made my MPI an 'S'

[Steve220]

CNC porting is where it's at. Not entirely sure which companies do it for the a series heads. I would definitely lap your valves back in to their seats. Made a massive difference to a mates mini when I did it. Skim only if it is warped. Otherwise a clean up is all that is needed.

[eric.sen]

porting the inlet valve and the guide boss does it makes a stage 2 ?

I found someone able to do it for me, but not sure if it is significant on gains.

 

I tried to find a modded cylinder head for MPI (stage 3)  and also a high lift rocker 1.5 on second hand but never seen one for sale on the forum...

or on the Bay

[nicklouse]

porting the inlet valve and the guide boss does it makes a stage 2 ?

I found someone able to do it for me, but not sure if it is significant on gains.

 

I tried to find a modded cylinder head for MPI (stage 3)  and also a high lift rocker 1.5 on second hand but never seen one for sale on the forum...

or on the Bay

not looked hard then

http://www.minispare...mance.aspx|Back to shop

[GraemeC]

That's not second hand, on the forum or on the Bay (ebay) though Nick 

[nicklouse]

true, but I would not by one without proof of purchase as I would not want one that someone had been playing with. 

 

it might be worse than standard.

 

it is also a bit more than "stage" 2

[eric.sen]

And what about the stage 3 MPI head at Minispeed. Website ?
Are they good quality ?
http://www.minispeed...tage3-mpi-head/

[r3k1355]

true, but I would not by one without proof of purchase as I would not want one that someone had been playing with. 

 

it might be worse than standard.

 

it is also a bit more than "stage" 2

 

This, unless you know the seller well or they provide a ton of decent paperwork you've no idea what you're buying.

 

I'm sure anyone could slap some Blue Hammerite on an A-series head and attempt to pass it off as modified.

[Steve220]

And what about the stage 3 MPI head at Minispeed. Website ?
Are they good quality ?
http://www.minispeed...tage3-mpi-head/

They went bust last year, so no.

[Scott@minispeed]

And what about the stage 3 MPI head at Minispeed. Website ?
Are they good quality ?
http://www.minispeed...tage3-mpi-head/

 

Hello yes they are very good quality. There is a lead time of 4-6 weeks though as we have a backlog of work currently.

 

Cheers Scott

[Steve220]

 

And what about the stage 3 MPI head at Minispeed. Website ?
Are they good quality ?
http://www.minispeed...tage3-mpi-head/

 

Hello yes they are very good quality. There is a lead time of 4-6 weeks though as we have a backlog of work currently.

 

Cheers Scott

 

 

Scott, are you guys back in business now?!

[Scott@minispeed]

I personally bought the goodwill of the business from the liquidator and am working with the engineer that did all the cylinder heads, will be bringing more services back gradually as and when we are able to

[MacGyver]

I personally bought the goodwill of the business from the liquidator and am working with the engineer that did all the cylinder heads, will be bringing more services back gradually as and when we are able to

Yay! 😀