JMAC Engine Shop
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Items For Sale

Stock Rebuilt Engines
Performance Built Engines

Stock Rebuilt Engines

I presently don't have any stock OEM engines in preparation. I have core engines I could build as a stock engine if you need one, CONTACT ME. 

Performance Built Engines

I am way behind the demand for my engines while I'm rebuilding my shop building. If you are interested in picking up one of my engines for your car, contact me. I am trying to turn out engines while doing work on my building. Those that send me a deposit are getting priority status. Your patience is very much appreciated! 
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FP55221UE - (At the machine shop 11-21-2025) Sale pending
This is an MG Midget 1500 engine; it will also fit a Triumph Spitfire 1500. My plan is to make this another performance engine with 9.5:1 compression and a 270 cam. It will be for sale when completed if someone doesn't buy it first. If you are interested in this engine contact me. CLICK HERE. 
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FP15414UE - (At JMAC being cleaned and built 11-21-2025) Sale pending
This is an MG Midget 1500 engine; it will also fit a Triumph Spitfire 1500. This will be a performance build and will be for sale when complete. If you are interested in this engine contact me.
​CLICK HERE
FM37458UE - SOLD
This is a Triumph Spitfire 1500 engine. It will also fit an MG Midget 1500. This engine will be a performance build and will be for sale when complete. It has flat top pistons. I shaved the head down to achieve 9.5:1 compression. It has a 270 duration cam, it has 1.438" intake valves and double springs. It is built for durability. The center main oil gallery has been opened to 5/16"  to supply extra oil to the #2 and #3 rod bearings and duplex timing contribute to that. New oil pump, pistons, bearings and rebuilt rocker assembly. To view the rebuild completion video click here. If you are interested in this engine contact me. CLICK HERE

High Performance Built Engines

I am currently building a customer Spitfire 1500 engine to be a high performance engine. 
We began work on this engine in December of 2024. It has been back and forth to and from the machine shop. When I took on this project it had already had the blocked decked but we didn't know how much. It had some aftermarket pistons of unknown origin in it. One of the pistons had come in contact with the head enough that there was wear on the side of the cylinder wall. We sleeved it and are fitting TR6 pistons. The block is being decked to bring the clearance to the head to approximately .004". 
​The head is being shaved down to achieve 11:1 compression and it will have a 275 duration cam. I am lightening the engine by using Maxpeeding rods and an aluminum flywheel. The rotating assembly will be balanced. It will have all new bearings, including cam bearings and tappets. It will have a new rocker shaft, high lift double springs, valve guides, double timing chain and sprockets. The intake valve seats will be ground to receive 1.438" valves. The center main oil gallery has been drilled out to 5/16" to accommodate better oil flow to the #2 and #3 rod bearings. The diametric clearance on the thrust washers will be .003-.005" of end float to resolve the thrust washer issue. It will be sealed up with all new gaskets and seals. The covers are powder-coated red and the block will be painted black like the picture. 
I will run this engine on my test run stand to check oil pressure and oil leaks. I will check compression numbers after initial run up To see the completion video, click here. 
If you need an engine, Contact me for prices and availability. ​
THE FOLLOWING ENGINES ARE CORES.
These are complete engines that could be rebuilt for you to your specs:
​Engine # FE13769E  Small journal 1296
Engine # FK1850HE Large journal 1296
Engine # FK5131HE Large journal 1296
Engine # FK33931UE Large journal 1296
Engine # FK34269UE Large journal 1296
Engine # FM29439UE 1500 (block and crank only)
Engine # FM31740UE 1500 (block and crank only)
Engine # FM32713UE 1500 (block and crank only)
Engine # FP21409UE 1500 (block and crank only)
Engine # FP22382UE 1500 (block and crank only)
Engine # FP33475UE 1500 (block and crank only)
​​I currently do not have any complete 1500 core engines available.​
Contact me for information on having one of these built for you, click here.
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  • Home
  • About
  • Services
  • For Sale
  • SHIPPING
  • Links
  • Gallery
  • Contact
  • WHAT'S NEW?
  • Testimonials