Triumph Five Speed Conversion Using A Toyota Transmission

So, Chip informed me the other day that a customer is replacing his TR6 transmission with a Toyota Five Speed. My immediate mental response was, “Oh yeah!” Five speeds is more than four and that’s good, right? When I got in the car and left, I wondered, “Why? What’s wrong with overdrive?”

So, being a skeptic, I asked, “What advantage does a Toyota Five Speed provide versus a stock transmission with overdrive?” I’ll use a list format for Chip’s points.

–Durability. Chip’s experience is that it’s not uncommon to begin having problems as early as 50,000 miles with the Triumph box. Some of the problems witnessed have been the layshaft bearings wearing and eating into the shaft and in some cases destroying the laygear. Other frequent wear items include the synchronizers, and replacements of satisfactory quality are becoming more difficult to find.
–They sometimes leak. Given the Brits’ historical inability to join two surfaces together and have them retain fluid, this is no surprise.

These first two reasons speak directly to my appreciation for trouble free motoring. He wasn’t done.

–The bearings in the stock box are undersized for the job they were intended to do.
–The OD unit adds weight to the car
–The OD unit sucks power from the car. It runs on pump pressure, which uses HP from the car.

In contrast, the Toyota box will go for 200,000 miles, and parts are available. They don’t leak, they weigh the same as a Triumph box, and have excellent ratios and shift well. The bearings and gears are oversized, which makes the box strong for our applications.

My personal opinion? Seems to me that if you’re motoring along and having no problems, keep on truckin’ and don’t think much of it. When you start having problems and need transmission work, consider the upgrade. That’s what I would do.

More information here… http://www.hvdaconversions.com/

Triumph TR6 Five Speed Conversion (Toyota)

We’ve been working on a very clean TR6. We’ve removed the motor and transmission. The motor will be rebuilt and the factory transmission will be replaced with a Toyota five speed, an increasingly popular conversion. We just so happen to have a few extra that we’ve brought in for occasions like this, so contact us if you’re interested.

Is a Toyota Five-Speed superior to a factory box with overdrive? Frankly speaking, I never noticed any shortcomings with the standard transmission, but then again my experience is quite limited. The large majority of Triumphs I’ve ever driven have been Dean’s, who has the unusual habit of working on transmissions and enjoying himself at the same time. Consequently, the transmissions in his cars tend to work pretty well. I asked Chip to tell me the merits of one versus the other. I’ll summarize our conversation in a separate post in the near future so you can draw your own conclusions, and provide a link on This Week at the Shop to a conversion site for further information.

Let’s see the car… click any picture for a larger view.

Prior to engine/trans removal, guarded by Zeus

Prior to engine/trans removal, guarded by Zeus

From the rear

From the rear

As it sits now

As it sits now

Engine Internals

Engine Internals

The block belted in for the ride to the machine shop.  Safety first, doncha know.

The block belted in for the ride to the machine shop. Safety first, doncha know.

I’ll make every effort to take pictures of the re-installation arrangement so you can see what parts are involved.

2002 Porsche Boxster

We keep it quiet, but Chip can work on “new” stuff, too, having made his living as a dealership mechanic for quite a while. The owner of this Boxster knows Chip and wanted all new coolant hoses and new Bilsteins. There are quite a few hoses in a Boxster that carry coolant from the radiators in the front to the motor in the almost-back. I was impressed with the provisions for motor access Porsche made, but getting to everything was still… interesting.

IMG_0027

See the new yellow thing?

Don’t worry, this car has a bumper. It’s remarkable how many things need to be removed to do these two projects. It’s not like changing your air filter.

IMG_0030A little view of just a couple of coolant hoses (the black ones).  They are in the front wheelwell.

They sure do look better with the bumper.

They sure do look better with the bumper.

Patience is a virtue when you’re working on cars.

Hey – Anybody Home?

Where have we been?  Well, we’ve been here, but I had some trouble with the WordPress upgrade from 3.4.whatever to 3.5.  I couldn’t get any pictures to load into the posts.  Not being a techie, I handled this by screaming, cussing, and hitting things.  Then, I waited a long time hoping it would get miraculously better.  Eventually, I read of a possible solution.  I decided to wait some more time, because the solution involved editing a computer code file, which seemed a lot like deciding which bomb wire to cut when I really had no idea.

Anyway, God loves fools and idiots.  It worked.  I’ll finally be showing you the Porsche Boxster that’s been in the shop.

Go hug a computer programmer.  Surely, they are angry and need love.

The American — An Old Corvette

Around here, it’s easy to forget America ever made cars. This old ‘Vette reminds us of the “Good Ol’ Days”, whether they really were or weren’t. Chip is taking all the trim off for the trip to the paint booth. Seems the owner got a little tired of the “Half Paint, Half Primer” look.

Red TR3 Almost Ready

Smiling Face

When we last saw our TR3, it had no face. Now, it’s almost ready to go, save for the carbs that aren’t back from Gary Martin yet.  The motor is rebuilt, the trans is ready, the wiring is all tested.  Once we have a way to mix fuel and air, we’re in business.

Interior back together.

Psst, Hey Buddy, Can I borrow a carb?

How NOT to Repair a TR4 Cylinder Head

Metal Conduit In Lieu of Factory Pushrod Tubes — Not A Successful Idea

One of our local TR4 owners had us take a look at his motor. We did and found, among other things, that someone had removed the pushrod tubes from the cylinder head at some point. Sometimes, this is no big deal, but those times coincide with cars whose cylinder heads have REMOVABLE pushrod tubes. TR4s do not. Technically, I suppose, they are removable, in the same way you can remove one of your teeth if you have to… but it will never be the same. Just because you can do something doesn’t mean it’s a good idea.

If you double click on the photo, I labelled one of the tubes. The others are the same. The factory tubes were replaced with metal conduit. Yep, conduit. Can’t blame that oil leak on Triumph.

Combine that with problems with the block, and this owner is looking for a new motor.

Don’t misunderstand, I’m not casting stones. I am a guy who once hit an entire 50 cap roll of caps with a sledgehammer, rendering myself deaf for 30 minutes. I’m fully capable of mangling a cylinder head. We’re just here to educate. Don’t try this at home.

TR3 Engine Rebuild

Rebuilt TR3 engine back at home

Waiting is a downer. Old cars just make it worse, because the last time I checked NAPA wasn’t stocking sleeves for a Triumph wet-liner four cylinder. When you get into the old iron, you don’t just wait on the mechanic, you wait on the parts, the machining, and sometimes the verification that the parts you ordered actually work. Heaven forbid they no longer make what you need. If keeping up with these things were as easy as speaking (as opposed to accomplishing) the necessary tasks, I’d have a warehouse full of old stuff. It’s magnitudes quicker to say than do.

Snapshot of some wiring harness progress

Such were my thoughts when I saw this TR3 on the lift with the motor installed. I’ve been looking at parts of it for a few weeks now while other parts got divorced and sent off for counseling. It’s a relief to see everything reconciled. Start up will be another comforting moment.

The front with no apron. With the apron and hood, it will look like a car again.

MGB – New Floorboards

Chip cutting out floorboards.

A while ago we witnessed Chip snipping and cutting and grinding his way through some swiss-cheese floorboards in this MGB.  They’re welded in and painted now, see below.

Pretty, no?…

… and, non-translucent!

Posted in MG

TR4 Undergoes Extensive Metalwork

We have two TR4s in here now, so I suppose it can get confusing keeping them straight.  They’re both red, too.  And both have needed a bunch of metal.  The one in these photos has been here longer and was the subject of this earlier post.  In addition to the battery box, the car needed metal on many different parts of the body.  It had been repaired earlier using the “It’ll do for a while” method.  I find consolation imagining that it kept the car going long enough to get it here.  The following photos show the new metal in the floors, sills, and battery box.  It’s beautiful work done by James Bowler of Weldone here in Richmond.  The man can bend some metal.  Take a look at the finished product and the things we found in the car.

New Battery Box

New Floorpans

James’ Sill Work

Here’s A Sign We Uncovered and Removed from the Floor

Here’s the pile of rusted metal and fiberglass patchwork removed from the car.