SPi Head Gasket
Turbo Mini Forums

Can I use a Turbo Head Gasket (BK450?) on a standard unmodified SPi. I know it will fit but are there any implications regarding thickness and therefore lowering the compression ratio.

Its the wifes car and I know she will want the compression figures before and after thye gasket replacement!

It is only coming off to do the valve stem oil seals so the figures should be similar before and after.

I'd use a bk450 regardless on a 1275. Shouldn't affect the CR.

If something is worth doing, it's worth doing half of.

The AF470 is probably what's listed for the SPI.

Both it and the BK450 are composite gaskets and virtually identical.

The only difference (so far as I can see) is the AF470 has a built-in O-ring seal around the oil feed drilling (that feeds the rockers) so is less likely to dribble oil down the back of the block.

Schrödinger's cat - so which one am I ???

my wife doesn't know what.head is never mind compression ratio.

Have you tried putting a head in the dishwasher and seeing if she notices?

What has alarmed me is the different compressed volume stated for BK450 i think was 4.00cc and I think AF470 is 2.8cc - I know what it means but have no idea what difference 2.8cc to 4.00cc would make.

I dont think she is even going to let me put her head in the dishwasher.

BK450 is 3.8cc compressed. Pretty sure the AF470 is the same.

If something is worth doing, it's worth doing half of.

not exactly a head...

Amazing! So its true!

It didn't do that much as I had blasted them of already, but they where certainly clean.

Did ur lass ever find out mate? Mines currently goin on about a fuel pump I've got on the kitchen table :)
Surprised she knows what a kitches is as i do all the bloody cooking.

Keep leaving car parts around the place, slowly you can wear them down! I have a selection of Peugeot parts including brake discs and calipers(admittedly newly plated and very clean) on the lounge coffee table at the moment.

Asha in charge of quality control.

I have various car part hiding places throughout the house.

I have pistons in my office, wheels in the en-suite cupboard, some bits in the kitchen cupboard.

That reminds me I need to bring my crank in from the garage!

Old house was better as it has a nice gap between the fitted fridge and freezer where I stuffed loads of bits.

If something is worth doing, it's worth doing half of.

Tom - I reckon you are playing Guess which brake disc the chew stick is hidden this time Asha?

You still talking about engines here mate?

Right to add to this thread here is mine and Toms collection:

Conservatory:
Bucket Seats
1 full set of alloy wheels
1 vauxhall alloy wheel
3 Vauxhall hub caps
2 Harnesses
1 Carb
1 fuel sender
1 head light
1 stud kit
1 fuel filter
1 starter motor
1 master cylinder
some seam cover
1 wing mirror
1 clear lense
1 dizzy cap
1 thermostat cover

Living Room:
Windscreen
windscreen fittings (bead and rubber)
number paltes
radiator
radiator hoses
many many wiring
tools

Kitchen:
4 spark plugs
SPi heater valve
jubilee clip

My bedroom:
4x car ecu's
sub cable
haynes manual

Garden:
8 bald tyres
1 clio turbo (with many many stuffs inside)
4 corsa steel wheels
2 clio alloys
5 mini steel wheels
mini brake shoes
1 corsa exhaust
1 set of clio springs

Garage:
we wotn talk about this

Room end of the garage:
1 clio interior
1 saxo chair
1 corsa door
1 clio door
1 corsa boot
1 corsa wing
3 corsa alloys
welder
tools

too much stuff to list pahah

I think we have well and truely worn Jess down

Edited by Craigie-B on 22nd Jun, 2012.

Oh Yes! she saw a pic on my laptop. Wasn't pleased.