CRB 553
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Registered: 5th Apr 02
Location: NE Drives: Punto GT
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How much does it cost to get engine bored out....
Got a 1400, would it be ok to get it bored to 1600 or 1650? (as was suggested in tuning a 1.4 post)
Thanks
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Ian
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Registered: 28th Aug 99
Location: Liverpool
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I don't think it's economic to do it at that size tbh. A replacement 1600 engine would be cheaper.
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CRB 553
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Registered: 5th Apr 02
Location: NE Drives: Punto GT
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just put the 1400 in recently so not an option tbh
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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Well to rebore it to a 1.6 your going to have to take it back out, take it entirely to bits, pay about £40/60 for a rebore, about £200 for new pistons (unless you can find standard 1.6 pistons used in good nick) then new gaskets to rebuild.
Not sure how the fueling would respond, even with a chip, as a chip is fixed map, so wont know about the extra displacement. A unichip would sort it though.
Could also get the bottom end balanced whilst its out, and even though its a low miler whilst its in bits for what the parts cost it would probably be an idea to change the big end and maybe the main bearings.
The rods and crank are the same, its just the pistons and bore that are different sizes.
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ffls
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Registered: 29th May 02
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Miles,
Are you sure the cranks and rods are the same?
Because I never was able to confirm that information with the haynes manual
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Gambit
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Registered: 5th Jun 00
Location: Common Sense HQ
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do the 1400 & 1600 blocks not use the same head?
so it would be just as easy to get a 1600 block and use its ECU?
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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Im 99% sure they are the same. I'll double check with epc, but am fairly confident. The heads are interchangeable between the 1.4 and 1.6 blocks.
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AdiSRI
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Registered: 1st May 02
Location: Berkshire
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i think the valves are larger diameter on 1600 heads?? Which is why it responds better to tuning?
This was in total vauxhall a while ago as bill blydestein (or wateva!) offers a service to redo the 1400 head with the bigger valves????
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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The valves are the same on the 1.4 and 1.6 16v engines. The 1.6 doesn't respond better than the 1.4, as a percentage increase.
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AdiSRI
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Registered: 1st May 02
Location: Berkshire
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this is the text from total vauxhall November 2002....
Cylinder Head
The jewel in the crown of this engine, it has 88% of the valve area of its 2-litre XE big brother. The early c16XE engine used slightly larger ports than the later X16XE unit, which is why it seems to respond to tuning more readily.
Flowing either head will gain about 6-7bhp on these engines, the noticeable EXCEPTION being the X14XE unit, which uses a different cylinder head with SMALL PORTS. To cure this, they should be enlarged to the same size as those on the X16XE head,which'll gain around 7-8bhp.
Talk to blydenstein engineering, courtney sport or SBD. You'll probably be looking at prices upwards of £400, deeming on specification.
long winded i know but that says it all!!!
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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Well done. Because valves and ports are the same thing.
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ffls
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Registered: 29th May 02
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But Miles,
Are the conrods and the crankshaft the same for the 2 engines?
This is interesting, because I think my next step will be increase the capacity from 1.4 to 1.6 with new pistons and block rebore
SRI read the article, better
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Gambit
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Registered: 5th Jun 00
Location: Common Sense HQ
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but whats the point in going with new pistons and a rebore if you can pickup a 1600 block cheaper??
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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quote:
Originally posted by miles
Im 99% sure they are the same. I'll double check with epc, but am fairly confident.
I only have epc at home so will check in a few hours when I leave work.....
If your going to use high comp aftermarket pistons then you'll be better off getting the 1.4 block rebored, as you have it anyway, and will need a rebuild/rebore whether its a 1.4 or 1.6 to start with.....
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Daimo B
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Registered: 20th Mar 00
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The heads are the same on the X14/X16 lumps.
Its the bottom end thats different. Bying the replacment parts is just as expensive as buying a 2nd hand 1.6 16v engine whole.
Boreing wise, you can bore the 1.4 up to a 1.5. No more.
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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Why is that Daimo?
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Daimo B
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Registered: 20th Mar 00
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Pff, i dunno, just information i've gathered over the years. So in reality, you might be able to bore it out more, but from what i've heard from various people, you cant really go much bigger. The block walls get too thin.
I remember some guy reckon he had his GSi bored out to a 1.8  Massive debate over it (fair few years ago now).
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matt_jonesuk
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Registered: 27th Feb 03
Location: worcester
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I remember some guy reckon he had his GSi bored out to a 1.8 Massive debate over it (fair few years ago now).
was a debate about it about 2 weeks ago again
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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Well you can bore a 1.4 out to the same as whatever you can bore a 1.6 out to, which is about 1650 IIRC. The block is identical, except the 1.4 has a smaller bore as standard, I remember saying this not too long ago. Where ever you got that info from daimo, is wrong.
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Daimo B
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Registered: 20th Mar 00
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Just general info i've picked up of various people over the years. Never known if it was correct, just assumed it was due to the fact of lots of people.
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ffls
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Registered: 29th May 02
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Boys,
I think the question now, is if I can fit the 1.6 pistons to the 1.4 16v using the same Rods and Crankshaft.
The 1.4 16V can be rebore to 1.6 I have no doubt about that.
Because I cannot fit a XE 2.0 l I have to tune my engine (1.4 16v)
But rebore the engine to 1.6 and fit new pistons seem to be a very good option.
So is it possible?
Miles do you confirm?
P.S: what's EPC? (I'm not English you know...:lol
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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EPC = Electronic parts catalogue - vaux's parts programe.
The rods are defo the same, as the small block 8v ones can be used.
Crank....have different part numbers, so I guess the stroke could be different....
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