Dumbo The Flying Elephant

[Larry Hill]

In mixing and matching the bearing shells the SOT (Stupid Oldman Trick) bit me in the butt. Old folks should not try to do any work in their head, there is no room, it is full of useless information. Long story short I put the wrong shells in the caps and the clearances were way off. After disassembling I miked the shells and replaced thick ones with thinner ones and everything looks like it might work. We will know on dyno day.

Thanks Mr JR and Mr Byrd

[Larry Hill]

The Total Seal Ring Grinder was my Christmas, Birthday, and Anniversary gift all rolled into one. Talk about a thoughtful wife. The Total Seal piece is very predictable. If you need another .005" to make target on your ring gap it will do it. It does a good job on on the oil rails too but I can not be heavy handed.
Back to work

[Larry Hill]

Rings are done, I think. I still may have to adjust pull on the oil rails. So far everything has been coming in the shop just in time. Its been fun working on some different aspects of trying to go fast, but I still have more questions than answers.

[Larry Hill]

After checking the top ring it the smaller ring compressor it showed that the ends were butted against each other SOOooooo

I am having to make a ring compressor because the one I ordered got delayed in shipping. Thanks Fed X. I did not have enough material to make a real one just enough to install the piston with the oil ring to check drag.

[Larry Hill]

I got a morning email around 10:30 am or so it stated the package will be delivered by 1:30 pm. We get a different email now stating delivery by end of day. I would guess the ability for fictional writing would be paramount for the interviewing process for a customer service at FedX. It is 5:30 pm and no package today but it was promised yesterday Friday. But what I made worked. The hard part was picking up the angel of the taper, based on the compound it's close to 4.xx degrees. I feel just like Dumbo, working for peanuts.

[Larry Hill]

Got my new expanders from Mahle. It helped the oil ring pull.

[Paul Precht]

Originally Posted by Larry Hill

A tip of the hat to Mahle Pistons. I checked the next size +.005" over pistons for the engine and size varied .0003" and weight of the eight pistons varied by less than a gram. I forgot to check weight of small piston to larger piston for balance. The bores checked OK just not very straight. With us going to the next size Jeff Taylor Performance will have it round and straight. Honing
using a Profilometer assures the values of RVK and RPK are closely observed. New equipment is always plus for any shop.

Hi Larry, would you be willing to share the RK, RPK and RVK you got on average as well as the oil ring pull tension.

[Larry Hill]

Paul I’m not trying to be evasive but that information is with Jeff Taylor Performance in Sellersburg In. Some things I prefer not to know. The reason being, if I don't know some proprietary information and for some reason it gets known it could not come from me.
On ring pull are you curious about RB or Gen 3?

Meanwhile, back at the ranch, I believe all the parts are here. It’s all on me now.

[Paul Precht]

Originally Posted by Larry Hill

Paul I?m not trying to be evasive but that information is with Jeff Taylor Performance in Sellersburg In. Some things I prefer not to know. The reason being, if I don't know some proprietary information and for some reason it gets known it could not come from me.
On ring pull are you curious about RB or Gen 3?

Meanwhile, back at the ranch, I believe all the parts are here. It?s all on me now.

Thanks for the reply Larry, both the RB and Gen 3 if you're willing to share but the RB being 3/16ths is what's in most of my builds so it's interesting to see what is working for other people as I'm a bit shy about going too light. Back in the day Hastings used the old TRW style black expanders and I could grind one end to give me the tension I wanted, I recently mixed a standard tension Speed Pro expander with Hastings rails as they had a shorter radial wall which is going in a low budget 383 for my bracket 62 Dart. I target the middle of Total Seal's specs for RK, RPK and RVK and it's a bit tricky getting there and like with oil ring tension, it's interesting to see what's working for others.

[Larry Hill]

Best I can remember for the RB is using an old fish scale that had a needle it was about 10 to 12 lbs. Once something worked I would reuse the the oil ring in the next setup. The Gen three stuff I haven?t had much success on oil control. I?m trying something different this build.