Omega Owners Forum

Chat Area => General Car Chat => Topic started by: Welung666 on 10 October 2010, 21:04:47

Title: Theoretical engine question...
Post by: Welung666 on 10 October 2010, 21:04:47
...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!
Title: Re: Theoretical engine question...
Post by: Marks DTM Calib on 11 October 2010, 08:00:58
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...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Title: Re: Theoretical engine question...
Post by: Welung666 on 11 October 2010, 08:07:43
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Quote
...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)

That'll do me then, thanks Mark :y
Title: Re: Theoretical engine question...
Post by: TheBoy on 11 October 2010, 17:51:06
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Quote
...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Not that I will go to that length, but the implication is a bit more power by fitting 3l pistons to 3.2 engine?
Title: Re: Theoretical engine question...
Post by: Lizzie_Zoom on 11 October 2010, 18:07:52
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Quote
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...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Not that I will go to that length, but the implication is a bit more power by fitting 3l pistons to 3.2 engine?


Ah, talk of pistons TB is my scene! 8-) 8-)

So if you fit 3 litre pistons on top of 3.2 piston rods, you should get the longer stroke, higher compression, and a greater area of cumbustion in an enlarged chamber? :-/ :-/


Title: Re: Theoretical engine question...
Post by: MaxV6 on 11 October 2010, 18:10:22
didn't i read that there's a small difference in bore size....    ???   so depending on which way round it is....     one lot would get stuck, and the other lot would slap like a barsteward?

Title: Re: Theoretical engine question...
Post by: TheBoy on 11 October 2010, 18:12:46
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didn't i read that there's a small difference in bore size....    ???   so depending on which way round it is....     one lot would get stuck, and the other lot would slap like a barsteward?

Ah, yes, if bore is different, that buggers my chances of ruling the universe ;D
Title: Re: Theoretical engine question...
Post by: Kevin Wood on 11 October 2010, 18:39:08
Yep, 3.2 has a bigger bore. ::)

Doesn't mean there aren't suitable pistons around but if you wanted more compression skimming a shedload off the head and/or the block would probably be the path of least resistance.

Kevin
Title: Re: Theoretical engine question...
Post by: TheBoy on 11 October 2010, 18:45:20
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Yep, 3.2 has a bigger bore. ::)

Doesn't mean there aren't suitable pistons around but if you wanted more compression skimming a shedload off the head and/or the block would probably be the path of least resistance.

Kevin
As its a V, can't skim much off heads, unless to can build new coolant bridge?
Title: Re: Theoretical engine question...
Post by: Kevin Wood on 11 October 2010, 18:48:26
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As its a V, can't skim much off heads, unless to can build new coolant bridge?

Ahh, yes. Would have to be careful there.

Kevin
Title: Re: Theoretical engine question...
Post by: TheBoy on 11 October 2010, 18:52:26
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As its a V, can't skim much off heads, unless to can build new coolant bridge?

Ahh, yes. Would have to be careful there.

Kevin
Actually, given chrisgixers dilema, if you need more power than the 3.2, there is only one real option for an Omega....
Title: Re: Theoretical engine question...
Post by: Lizzie_Zoom on 11 October 2010, 18:59:07
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...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Not that I will go to that length, but the implication is a bit more power by fitting 3l pistons to 3.2 engine?


Ah, talk of pistons TB is my scene! 8-) 8-)

So if you fit 3 litre pistons on top of 3.2 piston rods, you should get the longer stroke, higher compression, and a greater area of cumbustion in an enlarged chamber? :-/ :-/



Hello!!!!

No reaction then to my query?? ::) ::) ::)
Title: Re: Theoretical engine question...
Post by: TheBoy on 11 October 2010, 19:18:22
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...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Not that I will go to that length, but the implication is a bit more power by fitting 3l pistons to 3.2 engine?


Ah, talk of pistons TB is my scene! 8-) 8-)

So if you fit 3 litre pistons on top of 3.2 piston rods, you should get the longer stroke, higher compression, and a greater area of cumbustion in an enlarged chamber? :-/ :-/



Hello!!!!

No reaction then to my query?? ::) ::) ::)
I think MaxV6 blew that idea out. Shame, as it seemed like an idea ;D
Title: Re: Theoretical engine question...
Post by: Kevin Wood on 11 October 2010, 19:23:49
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...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Not that I will go to that length, but the implication is a bit more power by fitting 3l pistons to 3.2 engine?


Ah, talk of pistons TB is my scene! 8-) 8-)

So if you fit 3 litre pistons on top of 3.2 piston rods, you should get the longer stroke, higher compression, and a greater area of cumbustion in an enlarged chamber? :-/ :-/



Hello!!!!

No reaction then to my query?? ::) ::) ::)
I think MaxV6 blew that idea out. Shame, as it seemed like an idea ;D

I don't know, actually. Then again, 3.2 has a longer stroke so would probably have shorter rods anyway. :-/

Kevin
Title: Re: Theoretical engine question...
Post by: Lizzie_Zoom on 11 October 2010, 19:27:01
Thank you TB and Kevin! :y :y :y :y

Just wanted to know the technicalities or imposssibility of what I was suggesting ;D ;D ;D ;D ;D ;D
Title: Re: Theoretical engine question...
Post by: aaronjb on 11 October 2010, 19:57:31
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Yep, 3.2 has a bigger bore. ::)

Doesn't mean there aren't suitable pistons around but if you wanted more compression skimming a shedload off the head and/or the block would probably be the path of least resistance.

Kevin
As its a V, can't skim much off heads, unless to can build new coolant bridge?

I don't know, are Tucan's any good at mechanics? You'd think the big beak would get in the way.. *ducks*

If you really wanted to swap pistons to get more compression, I'm sure someone like Cosworth would be more than happy to make a set - might cost a pretty penny, mind!
Title: Re: Theoretical engine question...
Post by: Welung666 on 11 October 2010, 20:29:15
Would fitting the 3.2 conrods make a longer stroke on the 3.0 as they are shorter? Actually no, they'd just make the stroke the same but lower... ignore me ;D
Title: Re: Theoretical engine question...
Post by: Marks DTM Calib on 11 October 2010, 22:01:35
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...I've had a car in with an X30XE and a failed cambelt. Actually the bolt in the top belt guide snapped from, what I can tell anyway, not being tightened correctly. What would the advantages be between fitting a pair of X30 head to fitting Y32 heads?

I'm tempted to break it but just wanted some opinions first as this car is spotless and has only covered 82K since new!

Nothing, the combustion bowls are the same cc (the lower compression of the 3.2 is achieved using a slightly shorter piston)
Not that I will go to that length, but the implication is a bit more power by fitting 3l pistons to 3.2 engine?


Ah, talk of pistons TB is my scene! 8-) 8-)

So if you fit 3 litre pistons on top of 3.2 piston rods, you should get the longer stroke, higher compression, and a greater area of cumbustion in an enlarged chamber? :-/ :-/



Hello!!!!

No reaction then to my query?? ::) ::) ::)
I think MaxV6 blew that idea out. Shame, as it seemed like an idea ;D

I don't know, actually. Then again, 3.2 has a longer stroke so would probably have shorter rods anyway. :-/

Kevin

Or the the wrist pin closer to the piston crown  :y