'78 Triumph Spitfire

starman · Post by **starman** » Tue Jan 13, 2009 1:34 am

Just got this working. Excellent system. Easy to set up, install and manipulate. Had no idea I was leaving so much performance on the table with the stock distributor, especially with an engine that is a significant departure from stock. Here are the particulars on this engine in my '78 Triumph Spitfire 1500:

1514 cc displacement (0.020” overbore), 9.6:1 compression, balanced
“big valve” head (p/n 218139) w/ modified combustion chambers, ported and shaved
bronze valve guides, 3-angle valve grind
1.5:1 Harland Sharp roller rockers on Tuftrided rocker shaft, stock push rods
“B” grind cam (280° duration, 0.409” valve lift) and V.549 dual valve springs
dual-row TR-6 timing chain and cam gears
twin SU HS4 carburetors and 4-2-1 header exhaust

Here's a photo of the car (more photos to follow of the installation):

starman · Post by **starman** » Tue Jan 13, 2009 1:44 am

some photos of the installation

dr.occa · Post by **dr.occa** » Tue Jan 13, 2009 10:32 pm

well executed!

love the su carbs.

starman · Post by **starman** » Sat Jan 17, 2009 6:20 am

Thanks dr.occa!

I'm including some more photos of my installation.

starman · Post by **starman** » Sat Jan 17, 2009 6:21 am

mounted VR sensor

starman · Post by **starman** » Sat Jan 17, 2009 6:24 am

EDIS and Megajolt box location

starman · Post by **starman** » Sat Jan 17, 2009 6:29 am

Megajolt and EDIS

starman · Post by **starman** » Sat Jan 17, 2009 6:38 am

I fabricated an interface mounting plate to allow mounting of the coil pack at the same location as the original coil using the original holes for the coil mount. The plate has 4 threaded holes to accept #10-24 machine screws for holding down the coil pack, and is attached to the car with two flat-head machine screws that go through the holes in the deck for the old coil mount, which also secure the bracket holding the heater control valve.

starman · Post by **starman** » Sat Jan 17, 2009 6:39 am

Coil pack, mounted and wired-up.

starman · Post by **starman** » Sat Jan 17, 2009 6:41 am

The old distributor pedestal is retained to properly constrain the camshaft-driven oil pump drive gear. The distributor shaft hole is plugged with a rubber expandable freeze plug.

starman · Post by **starman** » Sat Jan 17, 2009 6:46 am

The complete, operational Megajolt Lite Jr.-equipped engine in my 1978 Triumph Spitfire 1500.

alexander · Post by **alexander** » Sat Jan 17, 2009 11:48 am

starman, i know that gratuitous gushing can sound a bit corny, but that is exceptionally neat and precise work you have been doing there. the whole thing looks fantastic.

alexander.

alexander · Post by **alexander** » Sat Jan 17, 2009 11:49 am

starman, i know that gratuitous gushing can sound a bit corny, but that is exceptionally neat and precise work you have been doing there. the whole thing looks fantastic.

alexander.

redkcspit · Post by **redkcspit** » Tue Jan 20, 2009 4:37 am

Starman,
Nice job on the installation. One thing I found after installing in my '77 spitfire, was that my tach was not correct so I made a LED tach and placed it in the ash tray (see photo). It runs off the six outputs. I like it there because I can flip the cover down when I don't want to see it.