My 88 Olds wagone U/SA 10 Pennies

[Robert Simpson]

Jeff, what if you look into some different valves for the head that is to small? There are different valves that have a relief machined into the face of the valve, this might help slightly, not 6cc's but some. Just a thought. Like the project and good luck with the "Wheeler Dealer".

Robert

[Jeff Stout]

Originally Posted by Robert Simpson

Jeff, what if you look into some different valves for the head that is to small? There are different valves that have a relief machined into the face of the valve, this might help slightly, not 6cc's but some. Just a thought. Like the project and good luck with the "Wheeler Dealer".

Robert

Your right about the valves helping some. After the 4th head I'm good now with 2 good heads that cc well. Now I have so many 7A heads available to me from craigslist and also a cylinder head shop I'm good for along time. I didn't wait for 1 guy to text me back and he had 4 heads for $50 but I had already bought 2 more so I passed on them. The cylinder head shop had 10 pairs sitting on shelf still. Today is finishing valve seat cutting and checking crank before balancing

[SSDiv6]

Originally Posted by Jeff Stout

Your right about the valves helping some. After the 4th head I'm good now with 2 good heads that cc well. Now I have so many 7A heads available to me from craigslist and also a cylinder head shop I'm good for along time. I didn't wait for 1 guy to text me back and he had 4 heads for $50 but I had already bought 2 more so I passed on them. The cylinder head shop had 10 pairs sitting on shelf still. Today is finishing valve seat cutting and checking crank before balancing

Jeff,
Which harmonic balancer will you be using?
If you are keeping the OEM harmonic balancer, there are two different styles for the late model engines, a small solid hub and a larger rubber one.
I recommend you do not use the solid hub for racing. Although is small and lighter, it does not dampen the harmonics as well as the larger two piece with rubber. With the block having hollow mains, the dampening of harmonics helps the life of the engine.
If you will not be using an SFI balancer, I recommend the Pioneer Part Number DA-4552

Lowest price in Ebay:

http://www.ebay.com/itm/Crankshaft-D...3D151293191224

[Jeff Stout]

Originally Posted by SSDiv6

Jeff,
Which harmonic balancer will you be using?
If you are keeping the OEM harmonic balancer, there are two different styles for the late model engines, a small solid hub and a larger rubber one.
I recommend you do not use the solid hub for racing. Although is small and lighter, it does not dampen the harmonics as well as the larger two piece with rubber. With the block having hollow mains, the dampening of harmonics helps the life of the engine.
If you will not be using an SFI balancer, I recommend the Pioneer Part Number DA-4552

Lowest price in Ebay:

http://www.ebay.com/itm/Crankshaft-D...3D151293191224

We just finished balancing with small balancer. I have no problem buying the 2 piece but do I need to rebalance? My guess is I don't need to.

[SSDiv6]

Originally Posted by Jeff Stout

We just finished balancing with small balancer. I have no problem buying the 2 piece but do I need to rebalance? My guess is I don't need to.

The small diameter hub you are using has a weight of 5.12 pounds. However, the larger harmonic balancer weight is 8.60 pounds. That's a difference of 3.48 pounds between harmonic balancers.

I know of people that have replaced the harmonic balancer from the hub style to the dampener style in street applications under the premise that the Oldsmobile engine is externally balanced, and the counterweights are the same.

I assume your rotating assembly was externally balanced like the OEM, just to be sure, ask the shop that did the balancing if you can exchange the balancer since they have the same counterweight.

[Jeff Stout]

Originally Posted by SSDiv6

The small diameter hub you are using has a weight of 5.12 pounds. However, the larger harmonic balancer weight is 8.60 pounds. That's a difference of 3.48 pounds between harmonic balancers.

I know of people that have replaced the harmonic balancer from the hub style to the dampener style in street applications under the premise that the Oldsmobile engine is externally balanced, and the counterweights are the same.

I assume your rotating assembly was externally balanced like the OEM, just to be sure, ask the shop that did the balancing if you can exchange the balancer since they have the same counterweight.

For sure it was externally balanced as I had to bring him balancer and flywheel. Ill ask on Monday

[Jeff Stout]

Small update as I went racing. New valves for $77 and new balancer for $76. Block and head work should be done this week. Should be able to work on front suspension rebuild and short block build in the next week. Total $3819.50

[Robert Simpson]

Jeff this is totally off topic but Al Provost's old wagon (N/SA, Air Ride, white olds) just came up for sale not far from me in Callahan Fl. Said motor was blown but comes complete with spares and even a spare car for $4500. Just saying might help you or someone looking to get into something inexpensive.

[Jeff Stout]

Just picked up all the machine work on block, crank and heads$1562.00 Total $5381.50

[Jeff Stout]

Also I was surprised when removing torque plate cylinders were. 0015 out of round up top. Bolted plate down again and checking cylinders were round again. It surprised me.