Dry sleeve v Alusil ?.
08-22-2018, 10:53 PM
#34
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Thanks.
Still looking for those with direct experience with this. Exchanged emails with Darton - only Wet sleeves are apparently offered with a budgetary estimate of $1,350 for the installation.
Still looking for those with direct experience with this. Exchanged emails with Darton - only Wet sleeves are apparently offered with a budgetary estimate of $1,350 for the installation.
08-22-2018, 11:13 PM
#35
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https://928motorsports.com/parts/dry_liners.php
08-23-2018, 05:58 AM
#36
Drifting
Thread Starter
6 years on from my original post I'm still running the original 2.5 block, despite having everything except the pistons to build a 3.0 engine. Not much motivation to pull out the 2.5 when it's running fine, and spend thousands I'd never see again. Today affordable standalone and a modern turbo seem an easier route to enough performance for a road car. Re sleeves, I can't see the point for wet sleeves over dry, unless they are needed to repair/replace a cracked cylinder. Plated Alusil seems technically the best option, unfortunately that's not an option where I live.
08-23-2018, 09:18 PM
#38
Three Wheelin'
Just an FYI, I had Issues last year but found out it was all related to the tuning I wont go into detail, but I have Darton wet sleeves and they are working just fine Had the Car out now for 4 Events this summer beating the hell out of it and if you pull the Dipstick the oil looks nice and Brown as the day I put it in, and runs like a clock! One Caveat, I tourqed the head studs to 85 ftlbs, (raceware).
I DID buy all the Tooling to Hone Alusil, I was at the P.R.I. Show last year and talked with the folks at Sunnen. Unfortunately you cant buy "just enough" material to do just one job. I Ended up with enough honing stones and compound to do like 20 blocks... It was like 600 bucks for the stuff, But they hook onto a CK-10 Machine that cost about 30K but my buddy has one. The Choice for me was Clear, 600 bucks to do all 4 blocks I have, Pistons= 600 bucks from Karl and Molinar Rods 600, So If my math is right Each Block will cost 150 bucks in honing material and 1200 for new rods and pistons with Rings!
(and I still have enough material to do many more blocks) ..LOL)
I will be putting my first of several shortblocks together this winter.... I have one already honed, ready to put together however....Honeydew projects are priority until the snow flies up here....
I DID buy all the Tooling to Hone Alusil, I was at the P.R.I. Show last year and talked with the folks at Sunnen. Unfortunately you cant buy "just enough" material to do just one job. I Ended up with enough honing stones and compound to do like 20 blocks... It was like 600 bucks for the stuff, But they hook onto a CK-10 Machine that cost about 30K but my buddy has one. The Choice for me was Clear, 600 bucks to do all 4 blocks I have, Pistons= 600 bucks from Karl and Molinar Rods 600, So If my math is right Each Block will cost 150 bucks in honing material and 1200 for new rods and pistons with Rings!
(and I still have enough material to do many more blocks) ..LOL)
I will be putting my first of several shortblocks together this winter.... I have one already honed, ready to put together however....Honeydew projects are priority until the snow flies up here....
08-23-2018, 10:24 PM
#39
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Yeah, I did.
Long story made short - it worked out, but not the route I want to take.
Regardless, I've asked Google a few times on this. Looks like there are a few options for dry sleeves, and of course the wet sleeve offered by Darton. Good to hear you're having good experience with the wet sleeves.
I looked at the 928 Motorsports website before. Seems kinda high in comparison to the Darton option.
Long story made short - it worked out, but not the route I want to take.
Regardless, I've asked Google a few times on this. Looks like there are a few options for dry sleeves, and of course the wet sleeve offered by Darton. Good to hear you're having good experience with the wet sleeves.
I looked at the 928 Motorsports website before. Seems kinda high in comparison to the Darton option.
08-24-2018, 01:57 AM
#41
Rennlist Member
Yeah, I did.
Long story made short - it worked out, but not the route I want to take.
Regardless, I've asked Google a few times on this. Looks like there are a few options for dry sleeves, and of course the wet sleeve offered by Darton. Good to hear you're having good experience with the wet sleeves.
I looked at the 928 Motorsports website before. Seems kinda high in comparison to the Darton option.
Long story made short - it worked out, but not the route I want to take.
Regardless, I've asked Google a few times on this. Looks like there are a few options for dry sleeves, and of course the wet sleeve offered by Darton. Good to hear you're having good experience with the wet sleeves.
I looked at the 928 Motorsports website before. Seems kinda high in comparison to the Darton option.
08-24-2018, 11:47 AM
#42
Developer
Our prices may not be competitive to the 944 specialists out there because we are set up for the 928, and doing a 944 for us is less common.
If Darton has special sleeves they have developed just for the 944, you'd be silly not to use them. They know their stuff.
BTW: The sleeves are not "just plain iron" or "just plain steel". The good ones are made from a special set of alloys selected specifically for their properties.
If Darton has special sleeves they have developed just for the 944, you'd be silly not to use them. They know their stuff.
BTW: The sleeves are not "just plain iron" or "just plain steel". The good ones are made from a special set of alloys selected specifically for their properties.
08-24-2018, 03:01 PM
#43
Drifting
Thread Starter
08-24-2018, 05:03 PM
#44
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Our prices may not be competitive to the 944 specialists out there because we are set up for the 928, and doing a 944 for us is less common.
If Darton has special sleeves they have developed just for the 944, you'd be silly not to use them. They know their stuff.
BTW: The sleeves are not "just plain iron" or "just plain steel". The good ones are made from a special set of alloys selected specifically for their properties.
If Darton has special sleeves they have developed just for the 944, you'd be silly not to use them. They know their stuff.
BTW: The sleeves are not "just plain iron" or "just plain steel". The good ones are made from a special set of alloys selected specifically for their properties.
From my limited research, it appears that the sleeves are primarily ductile cast iron material which in and of itself can be made in a variety of of 5 grades depending on the application. I have yet to determine the grade used in this application, but I suspect that most sleeves are the martensitic type with very high hardness and strength factor, but that is only a guess based on my limited understanding.
Regarding the dry sleeve approach, that is all I've read up on here from those who have posted their collective experience (primarily Refresh951/Shawn Deal). FWIW - Darton only offers the Wet Sleeve option ($1,375 with a 3-4 week lead time - shipping not included).
08-24-2018, 05:37 PM
#45
When Darton does it, they don’t do the finish decking and other machine work, just the sleeve install, so you have to factor that in to the cost as well.
Has anyone seen pics of Darton MIDs installed in a 968/S2 block? I’ve seen how they work in 2.5, low water jacket blocks, but not sure how they work with the mid level water jacket floor.
Has anyone seen pics of Darton MIDs installed in a 968/S2 block? I’ve seen how they work in 2.5, low water jacket blocks, but not sure how they work with the mid level water jacket floor.
