260 Big Bore mystery motors??????

[PaulR]

Looking for some info on a couple of 260's I picked up sold as parts motors. I can take apart and assemble these motors but I don't know much about bore sizes and porting and that type of thing. I've had a lot of 260's and Drags over the years but I've never seen anything like these two. They have Bridgeport style o-ring steel sleeves with a 3.640 bore with custom installed support bridges in the block. The pistons have a domed center and one head has an offset chamber. The heads are stamped port and starboard.

The top of both blocks have been cut into for what looks like a specific reason then welded up. Both water cavities have a tube welded into them and the water jacket by the exhaust divider has been milled out completely, stock has three hole drilled in those slots.

I posted some of these pics in another thread and

Erik Kiser mentioned the name

Alex Hledin as a possible builder? I'd like to possibly bring one of these motors back to life as the pistons look pretty good in one of them but I have no clue where to start looking for a sleeve or new rings. I need one sleeve for sure or I could use one from the other block?

[Capt.Insane-o]

The sleeves may have come from Alex, but the welding and umm..machine work is pretty crude to be from his shop..

[rock]

.015 over 3 liter sleeves in a 2.5 block with a bridged exhaust port. Don't see that every day.

Rock

[HStream1]

That looks like some Gordon Montigue work. I remember Chaz and i were having a conversation a couple years ago about Gordon having this idea.

[PaulR]

Few more pics, one is of a stock 2.5 piston in the cylinder

[Michael J Giesler]

Alex did stuff like that but he absolutely didn't do that welding if I ever can get up by you I will check it out Gene did a couple of experimental motors like that too check with RBT I think he may have had one like this but a 2.0

[RBT]

Alex Hledin.

[PaulR]

I did some research on the name Alex Hledin here on S&F but most of the threads are fairly old. What are the chances of getting sleeves for these things and are the pistons a limited run or are they a production piston...OMC???

[rock]

Hledin has built a lot of performance stuff. I had 1 of his 6 pack intakes and a set of dual plug 21cc heads. All on a nitrous Bridgeport Moorman built many moons ago.

Rock

[AZMIDLYF]

Hledin facebook page:
https://www.facebook.com/Engine-Perf...3376959165919/

[cali kid]

Sleeves and pistons all look custom built. Nothing I see looks too trashed. Why not piece one together with the best parts and see how it runs. Looks awesome to me. Somebody did a heck of allot of work there. Do you have the full operating systems to go with them? Subscribed.

[PaulR]

Sleeves and pistons all look custom built. Nothing I see looks too trashed. Why not piece one together with the best parts and see how it runs. Looks awesome to me. Somebody did a heck of allot of work there. Do you have the full operating systems to go with them? Subscribed.

I just got them apart over the weekend, but that's the plan as of now. I have everything, motors were complete without lowers, but nothing special, just horn motors with stock flywheels.

[cali kid]

Should be a real torque monster. Keep us posted.

[RBT]

PTR, performance through research. Alex Hledin, when mod-u was big he did some wild stuff and made huge hp. The 2.7 was a torque monster but had reliability issues. They would be interesting to see with a proper fuel map as one downfall was lack of effective fueling.
PTR is still at the top of the heap and very prominent in UIM F1, his current motors are pretty cool.

[PaulR]

I just looked over the blocks and I hate to cannibalize one to fix the other. The more modified motor turned over and all the pistons look fine, the issue with it is one sleeve is partly broken by the o-ring so it needs to be replaced. The other motor was stuck but no pistons were melted. These were used in saltwater and one piston was rusted in place along with the wrist pin bearings, also one cylinder is oversized.

At minimum I would need 3 sleeves 1 piston 2 full sets of rings and 2 sets of o-rings as far as custom parts go.

I don't use Facebook so I have no way to contact PTR