Author Topic: feeler: Main Bearing girdles (Read 27461 times)

truckinwagen · « **Reply #15 on:** January 19, 2009, 11:18:56 pm »

the one in the pic is 10mm
which is like 3/8 inch

I was thinking about 1/2 but if people would prefer I could make them out of 3/8 instead

Dirtrag2 · « **Reply #16 on:** January 19, 2009, 11:31:39 pm »

OK thanks for the info Owen

sign me up for 1 please :wink:

truckinwagen · « **Reply #17 on:** January 19, 2009, 11:39:24 pm »

so these people are interested:

Dirtrag2
RallyDiesel
53Willys
Kudagra
cyrus #1

anyone else?

mtnbob · « **Reply #18 on:** January 19, 2009, 11:52:24 pm »

What exactly is its purpose? :shock:

jtanguay · « **Reply #19 on:** January 20, 2009, 12:11:06 am »

Quote from: "mtnbob"

What exactly is its purpose? :shock:

just look at the pic of it installed. there isn't much holding the mains in place. you can get power robbing flex during hard runs, and that can cause serious problems elsewhere. too much flex, and then something will let go.

the girdle isn't really necessary for stock or even mild upgrades though.

Dirtrag2 · « **Reply #20 on:** January 20, 2009, 12:11:31 am »

please someone correct me if I'm wrong here...
it keeps the block from flexing under high boost and/or torque . basically if the block flexes the crank turns into a banana shape thus putting pressure in main bearings and causing terminal failure... eventually.

cyrus #1 · « **Reply #21 on:** January 20, 2009, 12:24:17 am »

Quote from: "truckinwagen"

I was thinking about 1/2 but if people would prefer I could make them out of 3/8 instead

I think 1/2" is what I would want.

truckinwagen · « **Reply #22 on:** January 20, 2009, 12:26:01 am »

thats it, and yes, this is for more than just a motor with a turned up fuel screw.

the girdle should really shine keeping the bottom end together when making lots of torque in the low end of the rpm range, or when boosting really hard,
but as said before it is insurance for any motor, and hopefully it should be pretty economical.

also if I can get a full 18 people interested, I can buy a full sheet of steel making the individual girdles material price much cheaper.

mtnbob · « **Reply #23 on:** January 20, 2009, 12:26:37 am »

Thanks for the explanation

jtanguay · « **Reply #24 on:** January 20, 2009, 01:13:08 am »

for $40 i'm in. shipping will hurt a bit coming to Canada, but you have to write it as a gift... as in you're being so generous in giving me a girdle, and i'm giving you $40 because your a nice guy :lol:

i might want two actually...

truckinwagen · « **Reply #25 on:** January 20, 2009, 01:16:58 am »

sweet, posting to western canada shouldn't be too bad, which carriers will go across the border?
I am not trying to get rich off of this, just trying t help out some friends and make mine more affordable.

fatmobile · « **Reply #26 on:** January 20, 2009, 02:03:49 am »

So the oil pan bolts on with every other hole?
The other oil pan bolt holes are for holding the cradle on?

truckinwagen · « **Reply #27 on:** January 20, 2009, 02:12:33 am »

the girdles will have the holes for the oil pan cut in them, I will leave the ones that hold the girdle to the pan up to you so you can decide what size bolts, how many and where you want.

fatmobile · « **Reply #28 on:** January 20, 2009, 02:27:30 am »

So new holes need to be drilled and tapped into the block, between the oil pan bolt holes, to hold this cradle on?

truckinwagen · « **Reply #29 on:** January 20, 2009, 02:34:27 am »

if you want then yes, thats the idea, but since I don't know what everyone wants out of their motor, I will leave that to you guys.