Turning Lemons into Twin Plugs

[lvporschepilot]

Very glad you came to acceptance early on! Wonder what kind of rod bearing clearances were there initially, and what type of oil? Did any of the other rods look like they were about to go bye bye?

[Steve@Rennsport]

Whoever built the engine into a 3.3 used FAR too much #574 and that may have contributed to the bearing failure.

[smarens]

Originally Posted by Steve@Rennsport

Whoever built the engine into a 3.3 used FAR too much #574 and that may have contributed to the bearing failure.

Steve,
-what makes you think excessive #574? Not questioning your expertise, I'm still a rookie and am also in the middle of rebuild, not trying to high-jack, I think may people would like to hear details from you

thanks

+1 for the excellent photography on this post also

[mikedsilva]

Originally Posted by smarens

Steve,
-what makes you think excessive #574? Not questioning your expertise, I'm still a rookie and am also in the middle of rebuild, not trying to high-jack, I think may people would like to hear details from you

thanks

+1 for the excellent photography on this post also

My guess is by looking at the squeeze out on the heads from under the camshaft carrier? But then that cannot be 574.. if it was, it would have been wiped away right? (only sets in absence of oxygen)

[Nux]

The wedge shaped Max Moritz style piston were specifically designed for single plug.

Is it not easy and relatively cheap to get new pistons with higher compression and correct domes to accommodate your new twin plug?

[VFR750]

I think the amount of 574 on the case halves.

Without data other than the excess 574 on the threads, there may have been other locations with similar excess that broke loose. Did you have a picture of the other side of the case? Maybe that had more evidence of excessive squeeze out on the inside.

Oil is not air, so wet 574 should cure. 574 also cures with time and heat it seems on my outside cam cover edges.

[gwag]

Originally Posted by Nux

The wedge shaped Max Moritz style piston were specifically designed for single plug.

Is it not easy and relatively cheap to get new pistons with higher compression and correct domes to accommodate your new twin plug?

Great question. Piston were essentially new so didn't want to get new but you make a good point.

You are correct that they are designed for single plug but dual plug will still have added benefits from what I understand.

Does anyone think that the wedge-dome design somehow will be 'bad' with the dual plug setup??

[gwag]

Originally Posted by VFR750

I think the amount of 574 on the case halves.

Without data other than the excess 574 on the threads, there may have been other locations with similar excess that broke loose. Did you have a picture of the other side of the case? Maybe that had more evidence of excessive squeeze out on the inside.

Oil is not air, so wet 574 should cure. 574 also cures with time and heat it seems on my outside cam cover edges.

Here are other pictures of the case.

[gwag]

Things are starting to go back together..........

[gwag]

Here's the crank/rods in place ...........

[gwag]

Cylinders and jugs coming together........piston rings getting hand lapped like the rails on my 1911 LOL......

[gwag]

I love jugs......

[gwag]

Heads and cams are next.......

[gwag]

Pics documenting Tim's level of OCD.......brushing away excess sealant......

[gwag]

Closeups of pistons/rings/jugs......

[VFR750]

This is so fun to see. Engine parts being assembled.

[lvporschepilot]

Pretty nice rack there sir.

[stephers]

Love the look of all the metal parts. Were they all vapor blasted? If not, how did they get that clean?

Thanks, Rick

[gwag]

Originally Posted by stephers

Love the look of all the metal parts. Were they all vapor blasted? If not, how did they get that clean?

Thanks, Rick

Correct. Vapor blasted.

[shbop]

Looking good there gwag. Very nice. Every time I see one of these threads, it has me re-thinking building the 3.0 in the corner of my garage, but I think I've spoiled myself with displacement. I built a 3.6 for my 81', and it's a powerhouse. I built a euro 3.3 turbo before that, and was blown away by the power it delivered. For those out there who have been down this road: will a 3.0, modded to 3.2SS with good injection, come close to the power from either of the above mentioned two? I'm thinking I've spoiled myself, and need to give-up on the idea of building a 3.2ss, and search for another 3.6.