Thinking of DIY instead of machine shop

Minimum? That sounds more like the maximum serviceable limit. And with a .002-.003" bore variation, to install new pistons and rings isn't really money well-spent. A short engine life is virtually guaranteed.

 

if you are in a car crash, and you have a compound fracture of the femur(you can see the thigh bone sticking through the skin in your thigh), the notion that despite knowing it probably will do no long term good, you will pour blood on an open wound in the hopeful notion that it will effect some miraculous form of long term benefit....despite knowing to the contrary beforehand...

the notion one concludes from the bleechers here is that: this is a job-while required-can't be properly afforded financially by the owner of the car, and knowing this, he seeks assurances from others(readers and posters) that "it will all be...OK"..
most responders seem to be offering opinions to te contrary....and....wel...it won't be in the long and probable short term...

what you propose is NOT a "rebuild", a "Re-man", or even a "re-hash"...its just a waste of time, effort, and money...
In this case, simply put-"the emporer isn't wearing any clothes".....

 

We can make it easy. The first guys do Ferrari machine work for some of the best shops on the west coast. Wherever you live, it would be much better to send them the parts and let them do a professional job. The other shop also specializes in Ferraris, etc.

Lesco Automotive Machine
3000 McMillan Ave.
San Luis Obispo, CA 93401
(805) 596-0400
Fax (805) 596-0205
http://www.4-lesco.com/
E-Mail: [email protected]
Machine Shop, Race Engines

S&R Exotic Motorworks
853 State Road 101 South
Liberty, Indiana 47353
765.458.5900
765.277.2848 cell
http://www.srexotics.com/
[email protected]
Engine Rebuilding, Machine Shop

 

Good information Terry, but I don't think he wants to spend the money. There are some VERY respected shops in the uk that could do a superb job on that engine; Emblem, DK, Joe Macari, and many, many others.....

 

Bert,

What you are proposing will work for you, re ringing a motor will give ok service life for the Fiat Dino you own. The book(rebuilding a small block Chevy) tells you that you will only get half engine service 50,000 miles out of the motor for just hone and fresh rings. Rebore and new oversize pistons would give you service like a new engine.




Ago

 

David- That book is talking about a cast iron block. The 2 liter Dinos have aluminum blocks, the 2.4 liter engines have cast iron blocks.

Dino engines are too expensive to screw up, even if it is in a Fiat Dino.

Eddie- Believe you are correct and he was just looking for someone to agree with him. None of the pros did.

 

you must use a torque plate if you do any work on the block, i have 29 years professional experience building dino engines, i may have a set original piston for sale, i can tell you what to do and not to do on engine.
pm if your interestred

peter

 

This may be a secondary issue for you. I've noted that they've seemed to have cleverly not included any spec in the 246 WSM for the allowable "ovalization and taper ratio" of the cylinder bore (i.e., non-cylindricity of the cylinder bore). Your new rings are probably going to be very well-made (i.e., almost perfectly cylindrical) -- if the bore is not, it would take a long, long time for the rings to seat as Tim previously suggested. Have you measured the ovalization and taper as George suggested earlier? Knowing these values might help ease your decision

Peter -- Do you have values for ovalization and/or taper specs for the cylinder bores from other Dino references, or recommended values for these items that you like to use?