Hi guys.
We may be at cross purposes here.
The .5" pipe through the bottom of the inlet manifold runners will have engine coolant running through it via a restricted size oriface union, as did the OE twin carb heated manifolds.
The OE UK market cars had a closed loop crank case breathing...
Hi Vlad.
The manifolds have a very pronounced downward slope from the head to the carb, in order to obtain bonnet clearance. This leads to the potential for fuel vapour fall-out to gather in the carb throat/inlet manifold area. The heating of the inlet runners is effected by .5" pipe drilled...
Hi Vlad, whilst I am not expert at such things- its all been a learning curve, I did try to be very thorough in re-timing the cam in, as it may be that this hadn't been the case by the person who originally timed it in? So, once the head was off, this was how I did it.
Having established the...
Thanks guys.
A little more info for you:
OE Triumph cam: Dur 270. 25/65 65/25 lift .232"
Triumph tune: Dur 288. 37/63 74/28 lift .288"
The Triumphtune cam is instructed to be installed at 103 degrees. But mine was found to be dialed in at 105 degrees! The car had a very noticeable lack...
Hi Paul.
Forgive my ignorance- but what is cam shaft base circle run out? Opening the tappets will in effect retard the valve timing if my understanding is correct?
Regards
Bruce.
Thanks Pat.
The bigger balance pipe is actually a balance reservoir in effect. The previous install wasn't correct in its design- or even my implementation of that design. I haven't tried the new install yet, as the car is awaiting its new head at present.
I understand and agree with the...
Hi Guys
The engine original spec was as follows:
2x 1.5" SU constant depression carbs.
Balance pipe fitted to heated manifold
2 litre straight six engine
CR 9.5/1
Cam 25/65 65/25
As now:
3x 1.5" SU constant depression HIF38 carbs.
Was an in-appropriate balance pipe arrangement.
Large...
Hi Guys
Thanks for the input- I will try to put something detailed together for you over the next few days.
The car is off the road at present due to the cylinder head failing after I skimmed it too much.
Not withstanding the fuel stand-off, it was running so well when I broke it!
