Stroker rebuild

mopar_mark · Post by **mopar_mark** » Mon Jun 09, 14 11:50 pm

Mick70RR wrote:
mopar_mark wrote:
Mick70RR wrote:You sure about that Mark?
I thought piston to wall clearance is the difference between the piston skirt diameter and the cylinder diameter.
0.008" sounds too much to me, 0.004" sounds about right for a forged piston in a small block.
As I understand the bore diameter is now 0.008" bigger than the Piston skirt diameter. Therefore the clearance is 0.004"
I'd say the clearance is 0.008".

My error Mick, you are correct the Piston to Wall clearance is indeed 0.008".
In Engineering terms of say a bore to shaft, it would be 0.004" clearance.

Cannonball · Post by **Cannonball** » Tue Jun 10, 14 12:43 am

mopar_mark wrote:
Mick70RR wrote:
mopar_mark wrote: As I understand the bore diameter is now 0.008" bigger than the Piston skirt diameter. Therefore the clearance is 0.004"
I'd say the clearance is 0.008".
My error Mick, you are correct the Piston to Wall clearance is indeed 0.008".
In Engineering terms of say a bore to shaft, it would be 0.004" clearance.

NOT OFTEN YOU GET THEM SPECS MARK

MORE LIKE 3"-4" SHAFT TO BORE CLEARANCE AFTER A FEW STROKES, AND THE BORE IS NICELY LUBRICATED,

Carl · Post by **Carl** » Tue Jun 10, 14 4:19 pm

Mick70RR wrote:I'm sure you'll be fine Carl.
By the way how do you measure your bearing clearances?

Oi behave

Carl · Post by **Carl** » Thu Jul 31, 14 9:57 am

Okay its here, your next instalment of the rebuild you have all been eagerly awaiting.

The Block came back looking like this after its 5tho hone, its not 100% but a vast improvement on what it was. They said to get all the scratches out I would be going into the next overbore size and the block wont take it.

The black marks are from gapping the rings.

Carl · Post by **Carl** » Thu Jul 31, 14 10:12 am

Then the block got stripped of all the old paint and a good wash down to clean the bores from the re hone. And the Block got a new lick of paint.

Carl · Post by **Carl** » Thu Jul 31, 14 10:23 am

I gave the pistons a bit of a clean up, not great but better than how they came out. And Total Seal rings fitted.

Carl · Post by **Carl** » Thu Jul 31, 14 10:26 am

A measure up of the mains and crank, and plenty of Bearing Guard on the shells.

Adrian Worman · Post by **Adrian Worman** » Thu Jul 31, 14 10:28 am

Keep at it mate

autofetish · Post by **autofetish** » Thu Jul 31, 14 10:44 am

so so so good

was great to meet you at the nats fella

as said when I win the lotto me and you are going to build my hemi on the street

keep the pictures coming

Carl · Post by **Carl** » Thu Jul 31, 14 10:44 am

Im trying Ade mate

Carl · Post by **Carl** » Thu Jul 31, 14 10:47 am

autofetish wrote:so so so good

was great to meet you at the nats fella

as said when I win the lotto me and you are going to build my hemi on the street

keep the pictures coming

Was good to meet you to Will, cheers for the Beers. I would rather build it in a workshop mate

Carl · Post by **Carl** » Thu Jul 31, 14 10:56 am

Almost forgot about the rear oil seal going in.

Used my trusty High Tack Gasket Sealant in the groove then placed seal into grove gluing it in. Then Greased around the seal.

Carl · Post by **Carl** » Thu Jul 31, 14 10:59 am

Crank goes in

Carl · Post by **Carl** » Thu Jul 31, 14 11:06 am

Time to pop the Pistons in at last. The Bore got another good dosing of oil as did the ring compressor. Yippee the Pistons are finally in the correct cylinders. And as you can see there is a noticeable PTW clearance now.

Scooby · Post by **Scooby** » Thu Jul 31, 14 11:10 am

Nice work mate....keep posting