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Author Subject: INFO:2.1 conversion
simonjames

Seasoned Pro

Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,219

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Post #1
Well i've bought a 306 D-turbo to break today so looks like i have a crank now Smile

along side my pistons/rods and crank
Here are the 1s i have

what other parts/work am i going to need

what main and big end bearings do i need?

do all the 6 bits I.E pump chain pulleys all fit on the diesel crank or would i need to use diesel parts

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Posted 26th Nov 2009 at 01:10
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mxcrazy

Regular

Location: hastings

Registered: 22 Jun 2009

Posts: 456

Status: Offline
Post #2
are the rods and pistons gti fitment? or s16, obviously by increasing stroke the pistons will sit 1mm higher than a stock 86mm stroke crank, i think the common way is to use s16 or mi16 2.0 rods and pistons, cos they sit 1mm lower than GTI pistons as stock.
Posted 26th Nov 2009 at 16:24
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simonjames

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Location: Whitland S.Wales

Registered: 23 Nov 2004

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Post #3
they are the gti pistons and i do beleive that they will need machining on the top to get clearance

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Posted 26th Nov 2009 at 17:35
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

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Post #4
you'll need to machine more than just 1mm off the top edge if you want to retain the compression ratio at 8.0-1.

depends how much meat there is on them, you may not have enough there to keep it down.

everything should fit fine as far as I know regarding the crank.

2068cc is what you'll get on 86.5 bore x 88 stroke.

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Posted 26th Nov 2009 at 19:11
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simonjames

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Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,219

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Post #5
only way i'll really know is to trial fit it then really and see how far past the top the piston comes

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Posted 26th Nov 2009 at 19:15
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

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Post #6
not so much that, but how much the dish needs making bigger.

should have a compression height and dish size quoted for them, might be on the box.

add the compression height to half the stroke (44mm) and the length of the conrods (158mm) and subtract that from the deck height of the block. (234.5mm IIRC)

then you have the chamber size and gasket voulme to take into account, plus the decreased dish depth due to the skim.


I'd speak to Rich or Wossner and see if what you have is suitable, I know the compression height of the 6 piston isnt that great so trying to take a mm off them might be asking too much.

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Bring on the Trumpets.

Posted 26th Nov 2009 at 19:24
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simonjames

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Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,219

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Post #7
i did send rich a pm a few months back he said the tops would need machining

i've also got to take in to account that the black has also been decked (not sure by how much though)

i'll have to read the box it see the figures for the pistons maybe im better off just sticking with the std crank

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Posted 26th Nov 2009 at 19:30
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

Status: Offline
Post #8
Doh

time for a dry build of the bottom end then!

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 26th Nov 2009 at 19:31
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simonjames

Seasoned Pro

Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,219

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Post #9
yeah i dont think im gonna know really till thats been done, also theres not that many competant machine shops round here that i would trust to machine a brand new set of wossners so i my need to coriour them out

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Posted 26th Nov 2009 at 19:32
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