Engine blocks and strokers
10-19-2005, 09:38 PM
#76
Originally Posted by EB338
Here is the information I got from Darton Sleeves
We currently have a Porsche 928 V8 block here that we are doing R&D on. As far as we know it is very similar to the Porsche 968 3.0L block. The sleeve we will be making for the 928 will be an MID style sleeve which will make the block a closed deck and is like the one we currently use in the 968 and 944 blocks. As far as sizes we are not sure what the block will be able to withstand until we machine it out. The MID sleeve is one that we have been using on all our Honda, Ecotec, Nissan 350z, GM LS-1/2/6, Ford 4.6L and 5.4L blocks. In order to aid in slowing the deterioration of the sleeve we recommend the use of Evan Coolant when using our MID kit. www.evanscooling.com for more information. As far as warranty our sleeves carry a lifetime guarantee against manufacturer defects. As for pricing we will not know until we get the product closer to being made. Generally we have a 6-8 week lead time for our custom sleeves. We do have discounts for shops ordering multiple kits. We are not sure exactly how much longer it will be until we get the kit completed but I will see how far we are with our shop and let you know.
Let me know if you have any more questions.
Thanx,
John
Size Does MATTER!
John Catapang
National Sales Manager Darton International, Inc.
2380 Camino Vida Roble Bldg. K
Carlsbad, CA. 92011
sales@DARTON-international.com tel:
tel2:
fax: 800-713-2786
760-603-9895
760-603-9629
We currently have a Porsche 928 V8 block here that we are doing R&D on. As far as we know it is very similar to the Porsche 968 3.0L block. The sleeve we will be making for the 928 will be an MID style sleeve which will make the block a closed deck and is like the one we currently use in the 968 and 944 blocks. As far as sizes we are not sure what the block will be able to withstand until we machine it out. The MID sleeve is one that we have been using on all our Honda, Ecotec, Nissan 350z, GM LS-1/2/6, Ford 4.6L and 5.4L blocks. In order to aid in slowing the deterioration of the sleeve we recommend the use of Evan Coolant when using our MID kit. www.evanscooling.com for more information. As far as warranty our sleeves carry a lifetime guarantee against manufacturer defects. As for pricing we will not know until we get the product closer to being made. Generally we have a 6-8 week lead time for our custom sleeves. We do have discounts for shops ordering multiple kits. We are not sure exactly how much longer it will be until we get the kit completed but I will see how far we are with our shop and let you know.
Let me know if you have any more questions.
Thanx,
John
Size Does MATTER!
John Catapang
National Sales Manager Darton International, Inc.
2380 Camino Vida Roble Bldg. K
Carlsbad, CA. 92011
sales@DARTON-international.com tel:
tel2:
fax: 800-713-2786
760-603-9895
760-603-9629
Any update on this? I wonder who gave them the block?
10-19-2005, 10:43 PM
#77
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I asked them about the use of 944 sleeves and this was their response:
Are you referring to the 3.0L 944 block? People may have used our dry sleeves that are used in the 944 blocks in the 928. We have a head here with the block so we make the sleeves they will be made accordingly. The 3.0L sleeves are $800.00 for the set and include the 4 sleeves, o-rings, lubricant and sealer. The 3.0L kits are custom made to order.
Attached is a block spec of what the block is bored out to in order to fit the sleeves in the block. The stock cylinder casting is completely removed and replaced with the wet sleeve. Due to the limitations of the 3.0L block the largest safe bore size the block will go is 106mm. I will also attach a picture of the sleeves we use. The sleeves is sealed off with 3 Buna 70 o-rings on the lower register of the sleeve.
I have the images they sent me but Im not sure how to insert them into this post.
Are you referring to the 3.0L 944 block? People may have used our dry sleeves that are used in the 944 blocks in the 928. We have a head here with the block so we make the sleeves they will be made accordingly. The 3.0L sleeves are $800.00 for the set and include the 4 sleeves, o-rings, lubricant and sealer. The 3.0L kits are custom made to order.
Attached is a block spec of what the block is bored out to in order to fit the sleeves in the block. The stock cylinder casting is completely removed and replaced with the wet sleeve. Due to the limitations of the 3.0L block the largest safe bore size the block will go is 106mm. I will also attach a picture of the sleeves we use. The sleeves is sealed off with 3 Buna 70 o-rings on the lower register of the sleeve.
I have the images they sent me but Im not sure how to insert them into this post.
10-19-2005, 11:58 PM
#78
Send them to be at brencampATgmail.com
Put a @ where AT is.
I will post them.
Put a @ where AT is.
I will post them.
10-20-2005, 12:58 PM
#80
I got them. I'll post the pic, but the pdf could be a problem. What file form is the rtx?
10-20-2005, 04:40 PM
#81
10-20-2005, 04:41 PM
#82
Whoa. Little big. Well, most of us have broadband anyway.
10-21-2005, 09:40 AM
#84
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So, assuming these guys come through with the sleeves and I don't think they wont. Where am I going to have to look to find "junk" blocks for these projects? (actually just junk bores, in an otherwise good block) Then to top it off, preferably 87 model blocks with the "squirters". I would prefer to find blocks that are considered junk because of bore damage to keep my initial costs down and because I don't want to "destroy" good blocks by cutting the bores out. Any suggestions?
10-21-2005, 10:08 AM
#85
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The shortblock in my racecar right now is an '86, and it has a scratched cylinder. I will be pulling it out this winter, so it could be available for sale. I don't need it right now, of course that could change....
10-21-2005, 11:25 AM
#86
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If it's just scratches, not cracks, it might be candidate for aluminium sleeve. Even cracked block can be fixed with those but in my opinion is only worth the effort if it's squirter or owner must have original block in the car.
10-21-2005, 11:57 AM
#87
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Well, I have two ex-scratched blocks that have been bored, and one that was just lapped to match a set of 968 pistons I acquired. I also have a complete '86.5 motor waiting to donate it's block to replace the scratched block in the racecar right now. So, I don't need to fix this block for myself at this point. Of course with my recent history, I could need it sooner than I think....
10-21-2005, 12:19 PM
#88
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EB338 wrote:
Here's what the squirter looks like. Would the sleeve installation interfere with squirter operation?
Man, I forgot how much cylinder wall thickness I had before the big bore job.
Then to top it off, preferably 87 model blocks with the "squirters".
Man, I forgot how much cylinder wall thickness I had before the big bore job.
10-21-2005, 08:33 PM
#89
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Truthfully I am not sure if the squirter location will be affected by the sleeve install or not. They sent me specs for machining a 3.0 944 engine for wet sleeves but they don't know yet what the spec will be for the V8. It was the pdf file, so I couldn't post it.
10-21-2005, 09:02 PM
#90
I wouldn't think so, unless just above where that hole is is bored for a wet sleeve.