Main Bearing Clearence's?

Guys What would you accept for a good main bearing clearance? Rebuilding the 555 (new to me)and just checked the mains and the are .002 on 1-4 and .0017-.0019 ishon the #5. I know the factory wants .005-.0025 and some old performance book I have wants .002-.003.

Funny thing is that this book was printed in 1979 and it recommended the top ring be gapped smaller that the 2nd ring. I was told these ring gaps were new technology!

Ace

.003-.0032........IMO Your to tight.

and as far as ring clearance go with what the ring manufacture recommends for the application.

Also..... Please leave the factory books in the cabinet....... they can get you in real trouble on a big HP build.

I.m.o. less than .003" is not enough.

Lem Evans wrote:I.m.o. less than .003" is not enough.

I agree. Ok, for a stock everyday driver to be .002, but tight for a performance build imo.

Got more Bearing coming. Wish Lem's place wasn't so far a way.

Ace

if your "rebuilding" it i'd think it was working before?

Put her together with .0015" and spray it with a 450 shot.

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

O........he's gona spray it? missed that part.

cool40 wrote:

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

O........he's gona spray it? missed that part.

No...he did not say..spray. Here is the deal....there is no reason to do the main clearance below .003'" on a big inch high HP bbf. If/when the clearance got to .0035" at the thrust bearing it would not hurt my feelings or the bearings.

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

destroke it, and turn it 9500 rpm...................

richter69 wrote:

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

destroke it, and turn it 9500 rpm...................

green oil.......

richter69 wrote:

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

destroke it, and turn it 9500 rpm...................

Lem Evans wrote:

richter69 wrote:

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

destroke it, and turn it 9500 rpm...................

green oil.......

time out! no need to screw up the post with all the foreign language............

cool40 wrote:

richter69 wrote:

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

destroke it, and turn it 9500 rpm...................

Lem Evans wrote:

richter69 wrote:

Lem Evans wrote:Put her together with .0015" and spray it with a 450 shot.

destroke it, and turn it 9500 rpm...................

green oil.......

time out! no need to screw up the post with all the foreign language............

My bad....I meant to say 7.3....sorry

I had to break up all the conformity this place has exhibited in the last few days...........

Boy You Guy's get carried Away.....

While Were here what should I put the rod bearings at?

Ace

powerstrokeace wrote:Boy You Guy's get carried Away.....

While Were here what should I put the rod bearings at?

Ace

Lem said 7.3? is that with green oil or without?

.0026

IDT-572 wrote:.0026

Now your gona help!

cool40 wrote:

IDT-572 wrote:.0026

Now your gona help!

You gonna ride up with us this weekend?

IDT-572 wrote:

cool40 wrote:

IDT-572 wrote:.0026

Now your gona help!

You gonna ride up with us this weekend?

up where?

Rods at .025 to .028..... Blake Da Sanke Likes.... .026

I like .003 0n the rods also, w/20w50 Brad Penn

bbf-falcon wrote:I like .003 0n the rods also, w/20w50 Brad Penn

Who's Brad Penn?.......

lol

Kidding
Ace

powerstrokeace wrote:

bbf-falcon wrote:I like .003 0n the rods also, w/20w50 Brad Penn

Who's Brad Penn?.......

lol

Kidding
Ace

the 20/50 guy..... I like a little thinner Oil...... Strait 40 or 10/40 myself.

powerstrokeace wrote:

bbf-falcon wrote:I like .003 0n the rods also, w/20w50 Brad Penn

Who's Brad Penn?.......

lol

Kidding
Ace

Use to be called Kendall GT1