Need to sleeve 3.8 block
#1
03-02-2015, 10:57 AM
Join Date: Feb 2015
Location: Michigan
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#3
03-08-2015, 11:00 AM
3.8L engines are capable to be rebored up to 6 times by Jag standards. Most books will tell you how much to bore. There are 6 different piston options for the boring. You have 3 heads, 6 piston sizes and 3 cams available for 3.4/3.8 blocks. I would rebore and replace pistons before sleeving. Find how much you need to bore and buy pistons before taking to shop as they will bore to piston size.
Last edited by Jagfixer; 03-08-2015 at 11:02 AM. Reason: additional info
#4
03-09-2015, 07:41 AM
I purchased new sleeves for my 50 year old e-type from SNG Barrett (great to work with and sponsor of this board) and had my local machine shop (who has been in business for longer) remove the old sleeves and install the new ones. I had made up the special tool shown in the service manual for pressing out the old sleeves, but they were too "stuck" from all the years in the same position for the press to successfully remove them. The old ones had to be cut/bored out and any competent machine shop knows how to do this. Installation and boring/honing of the new sleeves was straight forward.
The sleeves from SNG Barrett were of the correct length unlike the sleeves of similar size readily available from Melling which most machine shops use. I believe the ones from SNG are imported from England. The Melling ones are shorter fractionally than Jaguar specification.
When I lived in Michigan I used to have my engine machine work done in Ann Arbor by a shop that had been in business for a long, long time. Alas, I cannot remember the name, but a search doesn't bring up anything familiar sounding, so they may have moved. I would shop around and visit a local shop and talk to the owner about what you want to have done.
The sleeves from SNG Barrett were of the correct length unlike the sleeves of similar size readily available from Melling which most machine shops use. I believe the ones from SNG are imported from England. The Melling ones are shorter fractionally than Jaguar specification.
When I lived in Michigan I used to have my engine machine work done in Ann Arbor by a shop that had been in business for a long, long time. Alas, I cannot remember the name, but a search doesn't bring up anything familiar sounding, so they may have moved. I would shop around and visit a local shop and talk to the owner about what you want to have done.
#5
03-11-2015, 08:20 AM
Join Date: Feb 2015
Location: Michigan
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Thanks for the info - I appreciate it. I found a really good machine shop this week that says the scratches in the cylinder walls can be completely removed by just honing .001"- .0015". They do business with a company that can replicate my pistons via CNC but increase the diameter slightly to achieve the appropriate fit. The set of pistons only cost around $800. I'm going to give that a try.
I purchased new sleeves for my 50 year old e-type from SNG Barrett (great to work with and sponsor of this board) and had my local machine shop (who has been in business for longer) remove the old sleeves and install the new ones. I had made up the special tool shown in the service manual for pressing out the old sleeves, but they were too "stuck" from all the years in the same position for the press to successfully remove them. The old ones had to be cut/bored out and any competent machine shop knows how to do this. Installation and boring/honing of the new sleeves was straight forward.
The sleeves from SNG Barrett were of the correct length unlike the sleeves of similar size readily available from Melling which most machine shops use. I believe the ones from SNG are imported from England. The Melling ones are shorter fractionally than Jaguar specification.
When I lived in Michigan I used to have my engine machine work done in Ann Arbor by a shop that had been in business for a long, long time. Alas, I cannot remember the name, but a search doesn't bring up anything familiar sounding, so they may have moved. I would shop around and visit a local shop and talk to the owner about what you want to have done.
The sleeves from SNG Barrett were of the correct length unlike the sleeves of similar size readily available from Melling which most machine shops use. I believe the ones from SNG are imported from England. The Melling ones are shorter fractionally than Jaguar specification.
When I lived in Michigan I used to have my engine machine work done in Ann Arbor by a shop that had been in business for a long, long time. Alas, I cannot remember the name, but a search doesn't bring up anything familiar sounding, so they may have moved. I would shop around and visit a local shop and talk to the owner about what you want to have done.
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