4.1 L HT 4100

[John Peck]

Are their any experts out there on this motor?  I have a 1985 Eldorado that should be rebuilt.  Is there a correct way to do this as to prevent future failure?

[Davidinhartford]

You may want to do a search on this forum for that info.   That is a pretty hot topic around here.

[John Peck]

Is there a company/rebuilder out there that has mastered this motor to make it good?  Jasper Engines maybe?

[Otto Skorzeny]

Jasper has an excellent rep. I think they do the 4100 but I don't know what they do to it. Do they do all the GM mods that the factory did after they started faiiling?

Ask a lot of questions.

[35-709]

HT 4100 Cadillacs:
(1982 -1987 HT 4100 powered cars)
The HT 4100 Chapter
Terry Griffin
terry@tpgriffin.com

From the CLC Home page, found by clicking on "Chapters" on the left.  There should be plenty of help there on that engine. 

[35-709]

The HT 4100 will always be problematic, by its design.  A good rebuild may well make it a better engine but it will always require meticulous maintenance and strict adherence to its particular/peculiar maintenance requirements.
Geoff N.