Spesso head gasket

[wrinx]

Are they normally this much? (http://cgi.ebay.co.uk/SPESSO-RACING-HEAD-GASKET-FIAT-LANCIA-INTEGRALE_W0QQitemZ130166819622QQihZ003QQcategoryZ 100914QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

wrinx

[AlfaJack]

Wow, glad mine came with the car! Actually the whole engine set was by Spesso.

[arjunior45]

from www.gozzoli.it you can have a far better grA head gasket {with separated rings} at just 220 Euro. I'll go for this one certainly.
We used it in a race prepared 75 Turbo with no problems at all when all the other one were blown after the 2 3 stage.

Nick

[Steve Webb]

Taking a quick look on here Nyssa Racing (http://www.nyssaracing.com/index.php) they certainly look to be pricey, the one on ebay retails at ?240 :eek:

[wrinx]

Ahh, as you say Steve, the auction is for a 1.9mm gasket which the site you listed sells for ?240!!!

EditL it also lists a 1.9 for ?96....so I guess "racing"on the ebay version is the GpA?

wrinx

[sub555]

got mine from walkers and it wasnt as expensive as that

[Steve Webb]

I think the Gp.A ones have the individual fire control rings so can deal with higher boost pressures. Delving back into my memory I seem to recall the standard Alfa head gasket was good for 1.4 bar, the regular Spesso 1.7bar and the Gp.A Spesso for 2.0bar+

But of course that could all be wrong.

[mindus]

... EditL it also lists a 1.9 for ?96....so I guess "racing"on the ebay version is the GpA?

wrinx

#67633 is a Group A headgasket.. But it should be possible to find one around 200 euro.

You can find Spesso catalogue (with a product number for each gasket) on http://www.tecno2.co.uk/gaskets.htm

Cheers,
M.

[djsly]

#67633 for 200€?? Where? I searched and could not find any for less than 300€.

[mindus]

After a quick search found this:
http://www.shopmarianituning.it/icart/cercaprodotti.asp?lingua=en&order=ASC&sort=codice
euro 225 (pretax)

[Steve Webb]

So which gasket is the original thickness? the 1.4 or the 1.9?

Does the 1.4mm increase compression from standard? or does the 1.9mm reduce it from standard?

Steve

[Juan AR155Q4]

The standard gasket (not the spesso one) has 1,9mm before tightening it.
So the 1,4mm should increase the CR.

Edit: I?ve just calculated CR change, new value with 1,4mm gasket is 8,22:1

[arjunior45]

The standard gasket (not the spesso one) has 1,9mm before tightening it.
So the 1,4mm should increase the CR.

Edit: I?ve just calculated CR change, new value with 1,4mm gasket is 8,22:1

Juan could you calculate the CR with a 1,6mm gasket?

Cheers

Nick

[Juan AR155Q4]

Just reviewed my calcs.

CR:
1,9mm -> 8,00:1
1,6mm -> 8,17:1
1,4mm -> 8,28:1

[Juan AR155Q4]

Calculation is supossing that head gasket thickness is the same before and after thightening. Obviously, that?s not right, but it?s a good aproximation.
If someone has the camber and piston volume, I could accurate much better.

[arjunior45]

I was told that with 1,6mm gasket the CR should be at 8,21:1 but I do not know the camber and the piston volume, sorry.

Nick

[Juan AR155Q4]

Could be as you say Nick.
CR with original gasket (1,9mm) is 8:1 but I don?t know wich is the gasket thickness after tightening the cylinder head. It surely be less than 1,9mm. So with 1,6mm the final thickness should be less increasing CR.

[toch]

Are they normally this much? (http://cgi.ebay.co.uk/SPESSO-RACING-HEAD-GASKET-FIAT-LANCIA-INTEGRALE_W0QQitemZ130166819622QQihZ003QQcategoryZ 100914QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

wrinx


hello boys, pleaase see this link: http://www.navalineasport.it/

This company has excellent products & excellent prices!

[Steve Webb]

hello boys, pleaase see this link: http://www.navalineasport.it/

This company has excellent products & excellent prices!

Have you used these gaskets before Toch? Looks like they do several different gaskets for the Q4, different thickness's as well as separate sealing rings.

Might be a good alternative to Spesso