Did I ruin this block?
#1407582
03/24/13 01:06 PM
03/24/13 01:06 PM
|
Joined: Jan 2007
Posts: 2,431
SK,Canada
gregsrt
OP
top fuel
|
OP
top fuel
Joined: Jan 2007
Posts: 2,431
SK,Canada
|
When pounding out a slightly seized piston I slipped with the hammer and hit the #5 main saddle. I should have put the cap back on before doing it but in a moment of stupidity I forgot to. Did I render this block useless or will it be ok with a line bore/hone? Sorry for the poor pics, it's hard to get a good shot.
An association of men who will not quarrel with one another is a thing which has never yet existed, from the greatest confederacy of nations down to a town meeting or a vestry.
Thomas Jefferson
|
|
|
Re: Did I ruin this block?
[Re: Mr.Yuck]
#1407586
03/24/13 01:17 PM
03/24/13 01:17 PM
|
Joined: Jan 2007
Posts: 2,431
SK,Canada
gregsrt
OP
top fuel
|
OP
top fuel
Joined: Jan 2007
Posts: 2,431
SK,Canada
|
well it's more of a dent than a chip. I'm thinking if I used a stroker crank with 440 mains that would machine out....btw its a 400 block.
An association of men who will not quarrel with one another is a thing which has never yet existed, from the greatest confederacy of nations down to a town meeting or a vestry.
Thomas Jefferson
|
|
|
Re: Did I ruin this block?
[Re: gregsrt]
#1407591
03/24/13 02:21 PM
03/24/13 02:21 PM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Take a stone to it and make sure there isnt any high spot.. if there is stone or file it down and your good to go 
|
|
|
Re: Did I ruin this block?
[Re: skrews]
#1407594
03/24/13 04:01 PM
03/24/13 04:01 PM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Quote:
I would recommend that you use a file that is long enought to keep the file on the #4 saddle while filing the #5 saddle flat
X2
I would have the shop breath on the main line with the hone also.
I wouldnt waste my time... if he wasnt planning on honing
the mains ... just file it ... the cap surface I
would lay the file flat on the main to get it flat
(touch the high spot first till close) then in the
bearing surface touch the high spot till close then
lay the file on the whole bearing surface to make
sure its straight and flat... sure a machine shop
might say it should be line honed but thats what
they sell... I did this on one of my blocks and hit
it with a fine file... its still turning 8200 rpms
for the last 8 years... JMO
|
|
|
Re: Did I ruin this block?
[Re: MR_P_BODY]
#1407595
03/24/13 08:06 PM
03/24/13 08:06 PM
|
Joined: Jan 2007
Posts: 2,431
SK,Canada
gregsrt
OP
top fuel
|
OP
top fuel
Joined: Jan 2007
Posts: 2,431
SK,Canada
|
Thanks for the replies, now to get it sonic checked and decide on either a 4.15 or 4.25 stroke.
An association of men who will not quarrel with one another is a thing which has never yet existed, from the greatest confederacy of nations down to a town meeting or a vestry.
Thomas Jefferson
|
|
|
Re: Did I ruin this block?
[Re: gregsrt]
#1407599
03/25/13 06:13 PM
03/25/13 06:13 PM
|
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
|
Quote:
you guys are reading my mind. 
Plus the most common piston for a stroker low deck is 1.32 CH , there isn't a rod that works with that piston and a 4.150 stroke . 4.25 is the way to go and you get a 6.535 rod .
you want to be careful filing it , make sure you don't take any material off the #4 saddle.
It's probably a good thing you didn't have the cap on there you probably would have broken it. I don't like driving out stuck pistons , I threw out a 68 440HP block because my buddy punch a hole right thru the cylinder wall ... 
Use a round stone to take the high spot off the bearing bore .
Good luck 
|
|
|
Re: Did I ruin this block?
[Re: '72CudaRacer]
#1407600
03/25/13 09:17 PM
03/25/13 09:17 PM
|
Joined: May 2010
Posts: 295
maryland
buck440
enthusiast
|
enthusiast
Joined: May 2010
Posts: 295
maryland
|
Quote:
A file is your friend here.
Brian
i agree 
|
|
|
|
|
I have the mains turned down to on the RB cranks to 361-400 sizes 
Same thing on the rods, I either order the crank with BB Chevy rod sizes and B motor mains, I maybe going to smaller rod sizes in the future on offset grinding used cranks for more stroke 
In all seriuoness, don't make the main bearing bores larger,it weakens the main webbing 
