Daily Archives: December 5, 2024

Exhaust

Posted on by
Reply

Nothing in our exhaust system is as original! From the header to the oxygen sensor in the exhaust pipe to the dual tip muffler, everything is a modification. We have had the header fitted since the early 2000s. We don’t have a record but we are pretty sure that it was sourced from Mini-Mania and produced by Maniflow in the U.K. The header is a long branch, 1 5/8.” Before we initially installed it we had it Swain-Coated for thermal insulation. While beautiful then, it looks a little tired now so we will send it off to Jet-Hot Coatings to have them refinish it so that it will match our intake manifold.

Header

The Jet-Hot coating now matches the intake manifold.

Jet-Hot coated header

We purchased new exhaust pipes and a twin-tipped muffler from Maniflow to fit the header. The pipe comes in two sections. We will be installing a bung in the front pipe for an oxygen sensor to feed our AFR gauge. We also purchased Maniflow’s installation kit which has the hangers and clamps needed to do the job.

Maniflow Exhaust System

 

Modifying the Rear Leaf Springs

Posted on by
Reply

The rear suspension in the Bugeye is comprised of the quarter elliptical leaf springs, the shock absorbers, the radius arms and their mounting boxes, the rebound straps, the rubber bump stops, and of course, the axle. Video Episode Thirteen shows the removal of the original fifteen leaf springs: https://vimeo.com/769992972/c923375ecc

We chose to replace the original springs. The only springs readily available at this time are the 10 leaf “Rally” springs. We ordered a pair from BugeyeGuy.com along with five degree shims that will lower the car to give it a proper ride height. We disassembled these springs, removed the poor paint, cleaned them and repainted with POR-15 and installed teflon tape between each leaf to reduce friction and squeaking. That process is shown in Video Episode Fourteen: https://vimeo.com/754389824/9ab8550b67

Most of what we have read on the various forums is that the rally spec springs are a bit stiff and don’t give the ride that the original springs provided. Tom Colby of Speedwell Engineering has suggested the removal of three of the leaves to offer an improved ride and we decided to try his suggestion. We can always back up and reinsert the leaves we take out.

Tom Colby’s Spring Modification

Bugeye Restoration Video Episode Sixty-four shows the deconstruction of the springs.https://vimeo.com/989814778/55abef9a4c

It wasn’t quite as easy as just pulling out a few spring leaves. Because the remaining collection of seven springs isn’t as high as the ten leaves, the bolts and springs clasps need to be modified as well. The two 3/8″ hex head bolts (per spring) that are 3 1/4″ long were replaced with two bolts that are 2 1/2″ long. The 5/16″ compressing pins that are 2 1/2″ long were replaced with 5/16″ socket head screws. Socket head screws were used because the compressing pins have round heads that also serve to locate the spring in the chassis spring plate. Rather than rounding the edges off of a hex head bolt the socket head should work just fine.   

Two of the spring clips or brackets are of sufficient size to permit drilling an additional hole in the arms of the bracket to fit the new spring height. There isn’t room on the other two so we will try them as they are or modify at a later date.

The true test will be the ride and that is still months away!