I have a 1981 953 LGP (05Z) with a 3204 engine that is showing signs of severe blow by thru the valve cover vent and when powering up to full throttle a noticeable knocking noise has surfaced. The unit started quickly and idled fine after sitting for a month, then the above knocking situation appeared. Upon restarting it took a while to start and idled rough, I did not take to full throttle again. I pulled the head and noticed no obvoius damage to the head, valves or turbo. I had the head off 2 years ago and noticed scoring on cylinder #1 and the piston was replace by a previous owner. I can not say if the scoring has worsened to the cylinder wall and oil consumption was about 5 qts for a hard 10-12 hr day moving clay in a very hilly terrain. I was able to get another couple of years of hard service.
I am at a cross road as what to do.
•I have a rebuilt 3204 engine (45V from a 943) sitting in the wings in anticipation of this coming day. The original engine from the 05Z is a turbo unit and the replacement engine from the 45V is normally aspirated. I believe the blocks and internals to be the same (please advise). The replacement 45V has a newer style head and injection pump. Do I do a complete engine swap with the turbo plumbing from the original setup and have the injection pump readjusted for the turbo setup or just change out the 45V block, swap over the head, injection pump and turbo plumbing from the original 05Z.
OR
•Do I attempt a "in machine" freshing with rings and bearings. This does not allow for any proper block maching or resleeving of the scored cylinder. Seeing as I only have the head off I can not see if any internal parts are damaged (no obvious holes or oil leaks)
Winter is approaching fast in Ohio and the machine will have to be repaired outside next to a garage. I am assuming the engine change from a 05z to a 45V is a valid change over in the first place.
Please chime in on a correct path to take and if the change over is doable and if a "in machine" freshing would be a complete waste of effort.
Thank you in advance.
Tom
I am at a cross road as what to do.
•I have a rebuilt 3204 engine (45V from a 943) sitting in the wings in anticipation of this coming day. The original engine from the 05Z is a turbo unit and the replacement engine from the 45V is normally aspirated. I believe the blocks and internals to be the same (please advise). The replacement 45V has a newer style head and injection pump. Do I do a complete engine swap with the turbo plumbing from the original setup and have the injection pump readjusted for the turbo setup or just change out the 45V block, swap over the head, injection pump and turbo plumbing from the original 05Z.
OR
•Do I attempt a "in machine" freshing with rings and bearings. This does not allow for any proper block maching or resleeving of the scored cylinder. Seeing as I only have the head off I can not see if any internal parts are damaged (no obvious holes or oil leaks)
Winter is approaching fast in Ohio and the machine will have to be repaired outside next to a garage. I am assuming the engine change from a 05z to a 45V is a valid change over in the first place.
Please chime in on a correct path to take and if the change over is doable and if a "in machine" freshing would be a complete waste of effort.
Thank you in advance.
Tom
953 3204 engine swap questions
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