-
Hey Guest!
British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!**Upgrade Now**
(PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
TR6 '72 Engine in '74 TR6
- Thread starter 2wrench
- Start date
Share this page
The exhaust that came on the early cars was different but the later manifold and exhaust will bolt up with no problems. The earlier head had different intake port spacing so you will have to use the early intake manifold. The later one won't fit. If you have the early intake then I think that it should all just bolt in. There are some differences in emissions stuff that probably doesn't impact how the car runs - I don't know if it will be an issue for emissions inspections or not.
The early engines came with a little higher compression and a different cam. They had a little less peak power (about 2 hp less) but more torque so they were still quicker 0-60 mph according to the reviews of the day.
Bryan
The early engines came with a little higher compression and a different cam. They had a little less peak power (about 2 hp less) but more torque so they were still quicker 0-60 mph according to the reviews of the day.
Bryan
LastDeadLast
Jedi Knight
Offline
72 is a strange year... most of the 72's had the later head and the "dual" exhaust, but the rear transmission mount was from the early models. In a word, Yes.
The smog setup is really simple, if you keep it. I say go for it.
The smog setup is really simple, if you keep it. I say go for it.
TR6oldtimer
Darth Vader
Offline
I have a TR250 engine in a '73. I had to use the older style manifold with the ERG valve. Given my 73 is exempt from California SMOG inspections, I simply blocked off the ERG valve and using the carbs from the 73, set up the emission control system as if it were a '73.
If the 72 engine has the later style head, you are in business.
But if the engine you are getting has the older style head, you will be using the older style manifold, and the car may not pass the visual part of the SMOG inspection in Calif. However, you can refurbish the 74 head, install it on the 72 block and use the 74 manifolds. In no time you will be back on the road and the car will pass the emissions test in CA.
If the 72 engine has the later style head, you are in business.
But if the engine you are getting has the older style head, you will be using the older style manifold, and the car may not pass the visual part of the SMOG inspection in Calif. However, you can refurbish the 74 head, install it on the 72 block and use the 74 manifolds. In no time you will be back on the road and the car will pass the emissions test in CA.