bieransri
Member
Registered: 13th Apr 06
Location: Kidsgrove, Staffordshire
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what are peoples preference out of the 2? 8valve or 16 valve? do either have any advantages over the other?
if theres already been a thread about these i'll be happy with just a link to that but also thought it wuld be good discussion
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BarnshaW
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Registered: 25th Oct 06
User status: Offline
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8v's take more of a battering from my experience
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mantamark
Member
Registered: 19th Jun 06
Location: Northumberland
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same size, but more power from 16v!
People say the bottom ends are stronger on 8v, but who cares, buy 16v, rebuild, then it'll last!
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Mark330d
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Registered: 25th Apr 06
Location: Netherlee, Glasgow City
User status: Offline
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16'v are more hastle to fix and generally more expensive but the reward to more power usually.
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JM_16v
Member
Registered: 17th Oct 05
Location: Essex Drives: GLC63S
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as above, depends what u want fro a engine.. a 8v will take more of a haering but 16v will give you more power, but if it breaks its starts to cost £££
but by no means are 16v unreliable 
[Edited on 26-12-2006 by JM_16v]
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vaux-tech
Member
Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
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my 8v sri takes one hell of a battering, revs easily to just past 6k, sounds like a beast and mine is quicker than standard 16v's usually. but with the gsi coming along, i am coming over to the dark side with the 16xe, gonna tune it and see what its like!
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BarnshaW
Member
Registered: 25th Oct 06
User status: Offline
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what mods to make it quicker then a standard 16v?
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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16v's are better in every respect and they are no less reliable, why would they be?
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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STFU NEWBIE Steve.
8v's are better low down but loose puff after 4k RPM.
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Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
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quote:
Originally posted by Steve
16v's are better in every respect and they are no less reliable, why would they be?
thyey have 8 more valves, 8 more collets, 8 more vlave springs, 1 more cam pulley, 1 more cam, 8 more lifters
more things to go wrong obviously
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vaux-tech
Member
Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
User status: Offline
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ported/polished head, induction kit and full stainless system. not sure what it runs, its only a 1.4 sri but for such a small engine, it goes really well.
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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yes iw as about to add a bit more torque at lower revs but i think most people would rather settle for the extra power and more torque at higher revs
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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quote:
Originally posted by muppetsport
quote:
Originally posted by Steve
16v's are better in every respect and they are no less reliable, why would they be?
thyey have 8 more valves, 8 more collets, 8 more vlave springs, 1 more cam pulley, 1 more cam, 8 more lifters
more things to go wrong obviously
more things to replace if things do go wrong yes, but no more likely to go wrong
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BarnshaW
Member
Registered: 25th Oct 06
User status: Offline
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quote:
Originally posted by vaux-tech
ported/polished head, induction kit and full stainless system. not sure what it runs, its only a 1.4 sri but for such a small engine, it goes really well.
i dont think those mods make ur car faster then a 1.6 16v TBH
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vaux-tech
Member
Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
User status: Offline
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not 1.6, it was a 1.4sport of my m8z and left it for dead. never said 1.6!
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BarnshaW
Member
Registered: 25th Oct 06
User status: Offline
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i thought i was reffering to a 1.6 sport. il let ya off then 
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vaux-tech
Member
Registered: 28th May 06
Location: Preston, Lancs. Drives: Astra SRI turbo.
User status: Offline
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Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
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quote:
Originally posted by Steve
quote:
Originally posted by muppetsport
quote:
Originally posted by Steve
16v's are better in every respect and they are no less reliable, why would they be?
thyey have 8 more valves, 8 more collets, 8 more vlave springs, 1 more cam pulley, 1 more cam, 8 more lifters
more things to go wrong obviously
more things to replace if things do go wrong yes, but no more likely to go wrong
nope, not at all steve
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mantamark
Member
Registered: 19th Jun 06
Location: Northumberland
User status: Offline
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Is the original poster on about big, or small block engines?
we all seem to be talking about different things.
I dont think a big block 16v is anywhere near unrelaiable.
Same with any engine, look after it & it will be fine.
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mikey-corsa
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Registered: 5th May 06
Location: South Wales
User status: Offline
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Both engines are good, but 16v's are better than 8.
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Teknologikal
Member
Registered: 11th May 06
Location: Cardiff
User status: Offline
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Nowt wrong with my 1.6 8v I lost 7 bhp by not putting in a 16v...big deal
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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all of the common myths are coming out in this thread!
8v are good engines but limited by the breathing aspect of things above 5krpm
16v are better at higher revs but need to be revved higher to produce the higher figures which usually means less low down torque
the 8v engines are no stronger than a 16v engine. due to the higher revs the 16v bottom ends are more likely to suffer premature wear
generally out of the 2 the 16v is a better engine as it is smoother, more economical, far more modern and more tunable.
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Teknologikal
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Registered: 11th May 06
Location: Cardiff
User status: Offline
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Yeah, what Dave said 
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ed
Member
Registered: 10th Sep 03
User status: Offline
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quote:
Originally posted by mantamark
People say the bottom ends are stronger on 8v, but who cares, buy 16v, rebuild, then it'll last!
They have the same bottom end.
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Cybermonkey
Member
Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
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quote:
Originally posted by mantamark
Is the original poster on about big, or small block engines?
we all seem to be talking about different things.
I dont think a big block 16v is anywhere near unrelaiable.
Same with any engine, look after it & it will be fine.
big block 16v? what the hell are you talking about
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