fot
[Top] [All Lists]

[Healeys] Engine Rebuild Modifications

Subject: [Healeys] Engine Rebuild Modifications
From: healeybruce at roadrunner.com (Bruce Steele)
Date: Thu, 2 Mar 2017 15:06:56 -0800
References: <CAKWU37g3TCoOkYY2fFMRAG6_UgXs9eAZG9KuCdQumEv4AYk_-Q@mail.gmail.com> <1868043664.795203.1488468122524@connect.xfinity.com>
Good list, Bob.  When completed, my engine will have the Denis Welch DWR1 cam, 
bucket tappets, hollow push rods, DW 85mm pistons, DW lightened flywheel and a 
diaphragm style 9.5? Jaguar clutch, along with the DW high capacity oil pump I 
already had installed.  The floor of the water jacket has also been epoxied to 
seal any possible leaks from the oil gallery.

 

My exhaust manifolds were previously Jet-Hot coated, but Jet-Hot has since been 
through bankruptcy and is not owned by another company, though still operating 
under that brand.  With this rebuild, I am using a company called IA Coatings 
in Houston for ceramic coating of the exhaust and intake manifolds.  

 

The transmission has been rebuilt with DW 1st, reverse and cluster gears, 
synchros, with a new hardened DW gear lever.

 

I also use modern K&N oil and air filters.

 

Bruce Steele

Brea, CA

1960 BN7

 

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Bob 
Spidell
Sent: Thursday, March 02, 2017 7:22 AM
To: Ahealey help <healeys at autox.team.net>; 1 2 <healeydohdahman at gmail.com>
Subject: Re: [Healeys] Engine Rebuild Modifications

 

Well, the snide answer is: "If you want a 'modern' engine, buy a modern car."  
But, there are things you can do to a Healey engine to (marginally) improve 
performance and reliability without changing the essence of the car.  Here's 
some of the things I did for a recent rebuild:

 

*       Denis Welch DWR1 cam.  This cam is 'slightly better' than a stock BJ8 
cam, and is gun-drilled to provide extra oil to the lobes and lifters
*       84.5mm Omega forged pistons.  Way overkill for a street engine, but I 
couldn't find 'out-of-the-box' pistons that were of sufficient quality  with 
'modern' features like the 'latest ring design'--the top ring is about 1/16" 
thick!--from any of the usual suspects.  My builder was impressed with both the 
cam and the pistons; the pistons were not much more than half the weight of the 
older, more-or-less stock pistons, and the cam was of extraordinary quality
*       DWR high capacity oil pump with upgraded shaft (DWR sells this shaft 
and thrust washer for about half of the 'usual suspects,' esp. with the 
favorable exchange rate)
*       adjustable vernier timing set.  My builder said it took almost 4deg to 
dial in the cam perfectly.  Timing set is of excellent quality.
*       fully engineered PCV 'system.'  Still just sucks gasses from the 
crankcase, but my builder designed piping to equalize flow to both carbs, and I 
can run K&N filters without modification
*       instead of cork and fiber ('cigarette') gaskets, my builder used a 
modern sealant ('Right Stuff') to seal the rear main, engine plate and pan.  
Several hours on the test stand and 'hasn't leaked a drop'
*       Jet-Hot coated exhaust manifold.  I believe ethanol-blend fuel was 
causing some stumbling on hot starts and I'm hoping this solves the problem

I have some video of the engine running on the test stand (LARGE files), and my 
builder wrote a detailed list of all the work he did to make a strong and 
reliable street engine.  If anybody's interested I'll scan the list and post 
URLs to the video, but I can't do it until I get home Saturday.

 

Bob

--------------------------------
Bob Spidell - San Jose, CA


Hi All,

Is there a list of commonly done rebuild mods for the 3000 engine/transmission 
to modernize it?

_______________________________________________
Archive: http://www.team.net/archive

http://autox.team.net/mailman/listinfo/healeys


-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<http://autox.team.net/pipermail/healeys/attachments/20170302/59be85c8/attachment.html>

<Prev in Thread] Current Thread [Next in Thread>