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Chalkie

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Northamptonshire.

26th Jul, 2013 at 10:59:40pm

Right guys I asked ages and ages ago about my 998 block fine to over bore

well I have finally got pictures of the underside of my block meet my pain in the ass (not the misses)

Cylinders 1 + 2 (furthest from rad end)



Cylinders 3 + 4 (Nearest Rad end)




Believe it was Will.H who said about blocks being sleeved and not from factory

is this safe to over bore or is it scrap it buy a new block?

Thanks
Stephen

Vegard

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7765 Posts
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I pick holes in everything..<p>Chief ancient post excavator

Norway

26th Jul, 2013 at 11:14:58pm

Sleeved blocks can usually be bored .20. What's the OD of the sleeves?

Fit .80 pistons from Minispares?

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

wil_h

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Betwix Harrogate and York

27th Jul, 2013 at 07:08:44am

That's a new one on me!!

But those sleeves are not factory. All the factory sleeved blocks I have seen have a different casting to that.

You'll need +20 to get decent pistons, and that should be fine.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

27th Jul, 2013 at 08:39:56am

I wanted to go around 1060cc ish haha

I thought it was an odd bod but its standard bore size

thought it was odd it was painted red inside not a hit of black or yellow paint anywhere...

apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

27th Jul, 2013 at 09:00:54am

It's probably been reconditioned in the past.

Personally I would start with another block. If they only bothered to sleeve two bores, who knows what else they didn't do right...

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*

Chalkie

1909 Posts
Member #: 9764
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Northamptonshire.

27th Jul, 2013 at 09:45:47am

Pistons where fitted backwards aswell haha


Tom Fenton
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Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner <p>&<p>TM legend.

Rotherham South Yorkshire

27th Jul, 2013 at 09:47:30am

998 blocks are cheap and easy to get hold of, I'd just get another.


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


Like fuel 😂😂

Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

27th Jul, 2013 at 09:49:18am

Ive got a 998 A plus block in the shed

Ill turn this one into a table then.

Chalkie

1909 Posts
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Northamptonshire.

27th Jul, 2013 at 09:54:56am

But would perfure a A series 998 though

apbellamy

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16540 Posts
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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

27th Jul, 2013 at 10:42:11am

John has two 998 A blocks for sale.

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*

jlay

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319 Posts
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Senior Member

essex

27th Jul, 2013 at 10:42:44am

Why do you want a series? I may have a block from a standard bore 1098 its had water sat in it so will need a rebore but if your going large should be fine.

My small bore turbo project http://www.turbominis.co.uk/forums/index.php?p=vt&tid=473901

Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

28th Jul, 2013 at 07:37:16pm

A series main bearings are better IIRC

where the A plus dose not


Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

28th Jul, 2013 at 07:45:13pm

you can just file either bolock to take either

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

28th Jul, 2013 at 10:09:50pm

Wouldn't like to file it personal :(


On 28th Jul, 2013 Joe C said:
you can just file either bolock to take either

wil_h

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Betwix Harrogate and York

29th Jul, 2013 at 06:48:24am


I think it was Veg who was arguing this?

Is the differance that the A+ ones have a solid lower bearing and the A has the groove?

I prefer the solid and have never had a problem.

On 28th Jul, 2013 Chalkie said:
A series main bearings are better IIRC

where the A plus dose not

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

29th Jul, 2013 at 06:26:08pm

Not sure dude but I perfure the groove :) but then again you are the master of small bores haha

Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

5th Aug, 2013 at 09:42:39pm

Dose this bottom end look standard to you guys? out my A plus engine













The few A series engines I had to bits before only had 6 sided nuts and the crank didn't look as machined as this one

any thoughts thanks

Spank

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Member #: 909
Advanced Member

6th Aug, 2013 at 05:45:43am

yep, that's stock. Someone else may be able to tell you when the rod bolts were switched, but all of the A+ units I've opened had the 12point rod bolts.

Chalkie

1909 Posts
Member #: 9764
Post Whore

Northamptonshire.

6th Aug, 2013 at 07:47:05am

Thats what I thought

A series had 6 piont and only times Ive seen 12 point was in ARP rod bolts hmm but thanks dude its cleaner than my a series
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