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PostPosted: Mon Sep 07, 2020 2:50 pm 
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Full Pressure Turbo

Joined: Fri Jun 16, 2006 9:26 pm
Posts: 745
99 EMS wrote:
Most of the components on the 8v Saab engine are ridiculously heavy, reducing the weight of as many parts as possible with lighter modern quality parts is a good thing.
The standard conrod weighs in at 662g, the forged conrod I have weighs in at 510g, (both minus conrod bolts) a weight saving of 152g, multiply this by four and that's a total saving of 608g.

Standard 8v Saab conrod.
Image

Forged conrod.
Image


Are the forged conrods dimensionally the same as the standard rods or are they specials to go with your forged pistons and long stroke crank?


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PostPosted: Mon Sep 07, 2020 4:45 pm 
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UKS Addict

Joined: Fri Aug 05, 2005 6:51 pm
Posts: 2922
Location: Near Liverpool
Car Models: Saab 900 and 99
They are exact copies of the standard rod I had made some time ago and they will accept standard pistons, the gudgeon pin bush will need to be altered to accept the Mahle forged pistons.

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900i '87
900T '81
99 '83 TurboKiller
99 EMS '77
Lancer EVO 6 TME '00 red
Lancer EVO 6 TME '00 black


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PostPosted: Mon Sep 07, 2020 5:09 pm 
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Full Pressure Turbo

Joined: Fri Jun 16, 2006 9:26 pm
Posts: 745
Again I expect I'm missing something but I'm assuming to get to 2.5 litre you must be using a crank with at least 90mm stroke? So with standard length rods won't this poke the pistons out the top of the block by 11mm? I realise you could get some of this back with reduced compression height on the new pistons but not 11mm surely?


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PostPosted: Mon Sep 07, 2020 5:23 pm 
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UKS Addict

Joined: Fri Aug 05, 2005 6:51 pm
Posts: 2922
Location: Near Liverpool
Car Models: Saab 900 and 99
99 Pete wrote:
Again I expect I'm missing something but I'm assuming to get to 2.5 litre you must be using a crank with at least 90mm stroke? So with standard length rods won't this poke the pistons out the top of the block by 11mm? I realise you could get some of this back with reduced compression height on the new pistons but not 11mm surely?


Yes, my mistake, I'm still thinking in 2 litre, I will be using the forged 90mm rods.

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900i '87
900T '81
99 '83 TurboKiller
99 EMS '77
Lancer EVO 6 TME '00 red
Lancer EVO 6 TME '00 black


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PostPosted: Tue Oct 20, 2020 12:57 pm 
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UKS Addict

Joined: Fri Aug 05, 2005 6:51 pm
Posts: 2922
Location: Near Liverpool
Car Models: Saab 900 and 99
Custom camshaft has arrived from Catcams, along with springs, retainers and lash caps. Springs currently being adjusted for the correct seat pressure. Block is still in Sweden :lol:

Image

_________________
900i '87
900T '81
99 '83 TurboKiller
99 EMS '77
Lancer EVO 6 TME '00 red
Lancer EVO 6 TME '00 black


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PostPosted: Wed Oct 21, 2020 8:55 pm 
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Full Pressure Turbo

Joined: Fri Jun 16, 2006 9:26 pm
Posts: 745
Looks like quite a wild camshaft, tarmac rally / race spec ?


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PostPosted: Thu Oct 22, 2020 3:32 pm 
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UKS Addict

Joined: Fri Aug 05, 2005 6:51 pm
Posts: 2922
Location: Near Liverpool
Car Models: Saab 900 and 99
Its a bit racier than what I have now, although the way the car currently runs with the DTAS40 etc I could have used more cam without sacrificing too much.
The new cam is a similar profile to what has been used in a 220 bhp Pinto engine.

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900i '87
900T '81
99 '83 TurboKiller
99 EMS '77
Lancer EVO 6 TME '00 red
Lancer EVO 6 TME '00 black


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