engine machining!!

got some engine work done today


set up for decking

decking in process, van norman surfacing machine, cut .005"


finished surface


squared up for boring, quikways boring bar


boring in process, finished bore to the left, cut to 3.324" piston dia


finished bored block


set up om quikways powerstroke honing machine


finish honed block, honed in .0025 clearence per wiseco specs


next up deburing and block prep, balancing and preping rotating assembly

 

be sure to post back when your pistons are scuffed to all hell with damn near no piston to wall clearance...

i give you 1000 miles.

 

your telling me to vear from wisecos specs, in all of the blocks we have bored, and thats 20years worth, we havent had a problem with the specs. they dont say the alloy of the aluminum, could it be low expantion material, i dont know, but every piston manufacturer gives there clearence on the box

 

its a suggestion.

 

you hone to final dimension anyhow

 

Looks like a old mazda block ??

 

Yeah sorry a F series Mazda block .

 

its a bpze from a 94 miata, see my other post called, some non honda fab(tube front.caged miata drift car)

 

looks good

 

i know it sounds dump, but was all this done with the same machine and different attachemnts (same tub part?)

 

no 3 diff machines

van norman surfacer
quickways cylinder bore
quickway powerstroke hone

 

whats your shop name?

<-- from ct

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaveF &raquo;</TD></TR><TR><TD CLASS="quote">be sure to post back when your pistons are scuffed to all hell with damn near no piston to wall clearance...

i give you 1000 miles. </TD></TR></TABLE>I wonder since its a full iron block if the ptw is enough

 

i let the block sit in the machine over the weekend, when i go in today im gonna check the bores for shrinkage, ill prob have to hive them a couple more strokes, kehl tech performance

 

 

the block shrunk down a couple tenths, im gonna hit it with the fine stones again tomm, lol u guys made me nervous with the piston to wall clearence, i think im gonna loosen it up just a bit, it is a race motor, and loose wont hurt, if it were a v8 with side load on the piston i would be a little more worried about loosening it up, ill see where i am tomm when i work on it. i gotta have it out of the honing machine tomm

 

how does the block shrink?

Is there that much heat while doing this?

 

not realy, i but apperently so, the dial bore dosnt lie, and i could prove this time and time again, if we hone a block and then let it sit over night or a hr and check it again it normaly shrinks down like 2 tenths

 

you mean 2 thousandths ??? tenths of an inch are HUGE!

 

I coulda sworn my wiescos for my miata block say .003? Ima double check when I get home tonight, just for kicks.

 

tenths in machinist terms equal .0001"

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drsedaneg &raquo;</TD></TR><TR><TD CLASS="quote">its a bpze from a 94 miata, see my other post called, some non honda fab(tube front.caged miata drift car)</TD></TR></TABLE>

link?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FastCougar &raquo;</TD></TR><TR><TD CLASS="quote">you mean 2 thousandths ??? tenths of an inch are HUGE!</TD></TR></TABLE>

Manufacturing Industry Jargon:

Tenths usually refers to two ten thousands: .0002"
Two thousands: .002"
Twenty thousands: .020"
Two Hundred thousands: .200"


Just a general for everyone.

 

I'm looking at the spec sheet from Wiesco for my 1mm (3.11"/79mm) oversize 1.6l pistons.

0.0030 is the spec directly from wiesco. And it should be measured 1.300" from the bottom of the oil ring opening.

 

thats all good and fine exept that my sheet says .025" measured in the same place, at the lowest point on the skirt or at 1.300" below the oil ring
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