Engine and Transmission Tech

LS 6.0 has 4" bore. Darton?



Edited 1 time(s). Last edit at 12/17/2009 01:44AM by mgb260.

There seems to be a lot of interest in fantasizing a 4" bore Rover.Why not ,cut to the chase, forum your buying power with "Ian" at Wilcat, an getter-dun? U -no, 401"402-whatever it takes.roverman.

Cuz it's fun to work through the problems. I think it also helps solve some potential issues and expands our potential for creative solutions.

4.8-5.3 LS bore is 3.78. Those sleeves are common and would leave a little more meat in the block.

Originally posted by NixVegaGT
4.6 flanged liners wouldn't happen anyway because they're 3.7" at their largest... Maybe LS sleeves would work? I'm having trouble finding them for sale anywhere.

Darton has them in stock.
Did you look at the Modular integrated Deck link I posted earlier???

Yeah. Thanks man. I was wondering about something a bit simpler but I did find something on the Darton website. Are they all MID liners there? I'm pretty sure that's an upgrade. The ones listed for the LS seem pretty thick. I guess that would be better for wet liners anyway.

On the MID liners: I really dig the coolent passages through the Siamese and the deck. The coolent at the deck has got to help the head gasket cooling a lot. Those are cool.

Darton also lists a long 3.7" liner that would work great for the monster stroke 350 Rover:
T-3750 3.700(bore) 3.975(OD) 0.138(thickness) 6.100(length) 0.650(flange) 4.250(flange dia.)

6.1" length is an extra 3/4" longer. Good news there.

Mike, while you were in the process of boring out the block how much aluminum did you find behind the liners?

You could probably order LS sleeves from Chevy.

Nik.. Darton makes all types of liners..
I just though the MID stuff was interesting in comparison to what Mike is doing.. I looked into their stuff before I ordered the Westwood sleeves.. Darton was about 25-30 more per sleeve but was a true custom order..



Edited 1 time(s). Last edit at 12/17/2009 05:21PM by hoffbug.

I think the motor is going to a double wow factor of "great project" & "ouch my ass"

Mike, aren't you being just a little, Smokey Yunick cagey, about this? If you took the duct tape off, maybe we could grasp what your previous W.A.S. meant? "Ouch my ass"? Did Nic sell you his canvas seats? Prying minds want to inquire. Beans Mike,beans-just spillum ! roverman.

I'll contact Darton about the "Blanks" I listed above that I found on their site. See how much they go for. They don't look custom order on the site... I'll find out. If they are less than $600 it may be worth looking at...

Sorry Mike, You been "Smokey Yunick" on us too long! LS1/LS6 flanged liner, Melling # CSL332F, buy it now,Ebay$42.98ea. (10)avail.Of course the,"very nice", Darton MID liner is also available-(slightly higher@ $1,359.00ea.) I'm thinkin a little shopping is in order-Nic? Anyone other than "Jim", notice the 4.5/4.9 Caddy with the head studs going,"long" outside the block? Jim, we wanna put Northstar heads onnit! Nic wantz a 4" bore innit! I hope we're not left-wanting? roverman.



Edited 1 time(s). Last edit at 12/26/2009 10:16PM by roverman.

Mike .. Im wondering.. Dd your machinist groove the lower outside of the liners for O-rings?

Really enjoying this thread. In fact, it's killin' me!

Hmmm, a 4" bore combined with the stroke of a 4.2 Rover would net a Rover version of a 302 Chevy Z28 (or real close). That would be right up my alley!

Dale Spooner, I hope you are following this.

Guys,

Im trying to deal with inner conflict. On one hand I have let some information out since this seems to be the place of roverperimentation (I will trade mark or copyright the term) and well then there is the fact that the machinest is keeping his information locked up. I hope the engine holds up and he has ordered some real nice composite head gaskets with o-rings so some where either the head side or the top of the block/liner will need a grove......or both! Im dying to see and hear this thing run and the dyno......should be impressive. I know the heads on the first will be nothing special but heads are easy compared to making the block with radical liners work. As soon as I know something and I get permission from the President/CIA/Homeland Security and FBI I will let you in on it. Be prepared to read between the "blacked out" words. By the way Christmas was a steering wheel for my TR8, no engine or updates, sorry.

Thanks for the up-date?-Mike. You can ask Mr. Blackwood, but I think to protect," aword/phrase", you have to spell it correctly? We "all" have inner conflicts, Mike. It's a turbulent world. But don't the needs of the many.......? Just "get the beans" from Mr. Secretive, and "then", he can go hunting with Mr. Chaney. We all hope you got an "approved" steering wheel that woun't destroy the resale value of that timeless classic, TR 8. LOL"s all around in 2010 and may we all be Triumphant! roverman.

For instance: Art has Rotus Brossom.

Heads are going to be a challenge especially when we get up into the crazy numbers for displacement although if TA's heads go to 300 cfm maybe we're ok. Anybody have thoughts on this?

2 cents for my thoughts? Easy answer is add-a-blower, right JB.? I predict that Stg. II Buick V6 head from 20+ years ago will,"still" out-flow the TA.My,old-school, home-port, made 294 cfm. with "no" flow bench developement. I hope to get my "invisible" blower tested/perfected in 2010,(alien technology), very hush-hush, damn machinist ! roverman.

I think it was in HotRod recently, there was a feature on one piece 4 cyl liners, sort of shaped like 2 eights end to end, and the block CNC machined to match the liner, as I see the block could possibly have stability problems with this much material missing, and one piece 4 cyl liners probably prohibativly expensive, would it be possible make a jig and furnace braze the liners toghther, I have furnace brazed liners into small european Ford blocks, then re machined to basics.

Ian, Cast Iron? roverman.