deburring your block - Aussie V8 | Holden - Ford

wabbit · 15-09-2005, 12:13 PM

just looking at what needs to be done to my block, so i thought i'd post some shots.

these before and after pics are of three different blocks when i was deburring the oil galleries.

oil galleries before

a die grinder from supercheap and some burrs and stones from bunnings. about $55 all up and you're away. also good for port matching.

these have done 3 blocks so far, with a lot of life left in them.

wabbit · 15-09-2005, 12:49 PM

and here's the finished product. these are 308 blocks, but it's the same principal with any motor. the oil pump can't pump oil if it's sitting in pockets throughout the block where it does no good.

also, the dags and crap cause stress in the block. so removing it all is a win/win situation.
i might even deburr the outside of the block and heads.

mark · 15-09-2005, 01:01 PM

can i ask a question which i think most people might want to know..

the shavings that fall into the block, could this do damage, like get stuck in the oil pickup, ect.ect.???

wabbit · 15-09-2005, 01:07 PM

yes.
the motor has to be disassembled before any work is done and THOROUGHLY washed afterwards.

all machining work should be done prior to hot tanking

the pic with the cam installed is just to show the dags. this is my current motor and the dags are actually pretty good anyway, but it can be improved.

high volume oil pump, high volume sump and deburred block. oil is your friend

kiwi · 16-09-2005, 02:23 PM

a flapper wheel is also a handy accessory for a die grinder and some metal dies might be worthwhile aswell.

SpLiT · 16-09-2005, 05:41 PM

i so wish i had of done this before i put my block in to get assembled but as they say ya live and learn.

Good guide though mate it is a pretty good thing to do if your building a motor.

28 roadster · 19-09-2005, 10:18 AM

Good stuff !! not sure about the high volume oil pump though, They reckon a semi high volume is ideal for the 308 as a high volume at high revs tends to fill the rocker covers with to much oil !

wabbit · 20-09-2005, 01:34 PM

i've heard that before.

in my opinion, the rocker covers only fill with oil because the path back to the sump isn't free flowing enough.

it's an each way bet, whichever you choose

28 roadster · 21-09-2005, 10:24 AM

fair call

BTR · 09-10-2005, 02:37 AM

good to see others taking pride in there investment, My 350 block, rods,
pistons, crank etc etc copped the same treatment in total I spend about 80 to 100
hours on my engine in getting rid of sharp edges and factory castings and
opening up oil path ways..

Regards
LeRoy

gngtho · 11-10-2005, 05:05 PM

The first time around i did the work myself and nearly stuffed my motor, but the second time i got it right, good diagrams good advise for others i give you credit!!

BTR · 19-10-2005, 05:11 PM

Hi peeps

well Ive just pulled my manifold off as Im going to aluminium heads and thought
I would put some pics of the grinding and opening of my oil galaries up
for you all to have a look so it gives you DIY guys an idea of what you should be
doing your engines prior to getting machined...

Regards
Leroy

davidburns · 03-01-2006, 09:00 AM

So in the valley we want to remove and smooth and dags and casting routhness and polish it to a as smooth finish as posible?

wabbit · 03-01-2006, 08:16 PM

that's the story.

BTR's block looks beautiful.
you don't want the oil hanging up on the rough bits of the block. it does no good at all there.
the whole idea is to get your oil back into the sump so it can be recirculated

KILLA HJ · 22-03-2006, 06:04 PM

I will be starting this work tomorrow, will post pic's.

15-09-2005, 12:13 PM	#1 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,091	deburring your block just looking at what needs to be done to my block, so i thought i'd post some shots. these before and after pics are of three different blocks when i was deburring the oil galleries. oil galleries before a die grinder from supercheap and some burrs and stones from bunnings. about $55 all up and you're away. also good for port matching. these have done 3 blocks so far, with a lot of life left in them. __________________ Nothing to see, here Move along, please . Last edited by wabbit; 23-06-2006 at 06:13 PM.

15-09-2005, 12:49 PM	#2 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,091	and here's the finished product. these are 308 blocks, but it's the same principal with any motor. the oil pump can't pump oil if it's sitting in pockets throughout the block where it does no good. also, the dags and crap cause stress in the block. so removing it all is a win/win situation. i might even deburr the outside of the block and heads. __________________ Nothing to see, here Move along, please .

15-09-2005, 01:07 PM	#4 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,091	yes. the motor has to be disassembled before any work is done and THOROUGHLY washed afterwards. all machining work should be done prior to hot tanking the pic with the cam installed is just to show the dags. this is my current motor and the dags are actually pretty good anyway, but it can be improved. high volume oil pump, high volume sump and deburred block. oil is your friend __________________ Nothing to see, here Move along, please .

16-09-2005, 02:23 PM	#5 (permalink)
kiwi irregular member Trade Rating: (0) Join Date: Oct 2004 Location: vic. Ride: shaggin wagon. Posts: 1,772	a flapper wheel is also a handy accessory for a die grinder and some metal dies might be worthwhile aswell. __________________ *its more fun with a 351*

16-09-2005, 05:41 PM	#6 (permalink)
SpLiT Super Moderator Trade Rating: (0) Join Date: Jul 2004 Location: chermside, brisbane, QLD Ride: vh commodore, vp commodore Posts: 2,826	i so wish i had of done this before i put my block in to get assembled but as they say ya live and learn. Good guide though mate it is a pretty good thing to do if your building a motor. __________________ New - VH 304 with N20 - 382rwhp without gas SKIT58 OLD VH SL/E 308 on giggle OVH308 355's are like belly buttons everyone has one and all they are good for is collecting dust

15-09-2005, 01:01 PM	#3 (permalink)
mark Your friendly admin Trade Rating: (0) Join Date: Jul 2004 Location: Brisbane Ride: Posts: 8,055	can i ask a question which i think most people might want to know.. the shavings that fall into the block, could this do damage, like get stuck in the oil pickup, ect.ect.???

19-09-2005, 10:18 AM	#7 (permalink)
28 roadster casual poster Trade Rating: (0) Join Date: Mar 2005 Location: melbourne Ride: vt2 clubsport, 28 ford roadster Posts: 250	Good stuff !! not sure about the high volume oil pump though, They reckon a semi high volume is ideal for the 308 as a high volume at high revs tends to fill the rocker covers with to much oil !

20-09-2005, 01:34 PM	#8 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,091	i've heard that before. in my opinion, the rocker covers only fill with oil because the path back to the sump isn't free flowing enough. it's an each way bet, whichever you choose __________________ Nothing to see, here Move along, please .

21-09-2005, 10:24 AM	#9 (permalink)
28 roadster casual poster Trade Rating: (0) Join Date: Mar 2005 Location: melbourne Ride: vt2 clubsport, 28 ford roadster Posts: 250	fair call

09-10-2005, 02:37 AM	#10 (permalink)
BTR BTR Aluminium Fabrication Trade Rating: (0) Join Date: Dec 2004 Location: ADELAIDE (the hottie state) Ride: 355 chev powered gemini Posts: 127	good to see others taking pride in there investment, My 350 block, rods, pistons, crank etc etc copped the same treatment in total I spend about 80 to 100 hours on my engine in getting rid of sharp edges and factory castings and opening up oil path ways.. Regards LeRoy __________________ www.btrperformance.com.au

11-10-2005, 05:05 PM	#11 (permalink)
gngtho this is my XY Trade Rating: (0) Join Date: Mar 2005 Location: Adelaide Ride: 93 Ford Falcon XR6 Posts: 486	The first time around i did the work myself and nearly stuffed my motor, but the second time i got it right, good diagrams good advise for others i give you credit!! __________________ 351+top loader+9inch= Years of fun'headbang' 'headbang' 'headbang' 'drummer'

19-10-2005, 05:11 PM	#12 (permalink)
BTR BTR Aluminium Fabrication Trade Rating: (0) Join Date: Dec 2004 Location: ADELAIDE (the hottie state) Ride: 355 chev powered gemini Posts: 127	Hi peeps well Ive just pulled my manifold off as Im going to aluminium heads and thought I would put some pics of the grinding and opening of my oil galaries up for you all to have a look so it gives you DIY guys an idea of what you should be doing your engines prior to getting machined... Regards Leroy __________________ www.btrperformance.com.au

03-01-2006, 09:00 AM	#13 (permalink)
davidburns AUSSIE V8 HERO Trade Rating: (0) Join Date: Jul 2005 Location: brissy Ride: VH SLE Posts: 692	So in the valley we want to remove and smooth and dags and casting routhness and polish it to a as smooth finish as posible?

03-01-2006, 08:16 PM	#14 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,091	that's the story. BTR's block looks beautiful. you don't want the oil hanging up on the rough bits of the block. it does no good at all there. the whole idea is to get your oil back into the sump so it can be recirculated __________________ Nothing to see, here Move along, please .

22-03-2006, 06:04 PM	#15 (permalink)
KILLA HJ casual poster Trade Rating: (0) Join Date: Aug 2005 Location: townsville Ride: holden hj prem Posts: 206	I will be starting this work tomorrow, will post pic's.

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