motor rebuild

[oldschool]

Yep all the TC 1250/1300/1600 Hillman's had the hot cam Paddy.

Here's a NOS Hillman 1600 SC hot cam on eBay for $40 quid.

http://www.ebay.co.uk/itm/Avenger-Sunbeam-Unused-Camshaft-71268711-believed-1300-or-1600-specification-/301071298009?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item46193f6dd9

I've confirmed the 71268711 part number is for a Hillman 1600 single carb.
71268712 is the part number for the twin carb Hillman.

[old white 73]

all this cam info is really handy guys, wish i'd checked the part no. of the 1 i sent away- should be ok though. got the head back & have ground out the exhaust ports abit to match the manifold i'm using, theres a 4mm diameter difference between them. something else i've found is the heads inlet ports are slightly smaller than the intake manifold ports, a 1mm dia difference with a dd1 (1500) manifold & a 2mm difference with a dd2,(1600?) thinking of putting a chamfer on the edge to help airflow while leaving the rest of the port alone-good or bad idea, opinions welcome & yes im using the dd1.
anyone else noticed the twin strombergs appear not to have ram tubes at the carb mouth like the singles do?- another addition i have in mind to try on the dyno later

[oldschool]

My 1600 Alpine TC has a DD1 inlet manifold...am not sure what the difference between a DD1 and DD2 is!
A good idea to match up the inlet manifold and head ports to smooth the flow...we called it blueprinting in the old days!
The ram tube helps breathing at full throttle on the SC motor with its restrictive manifold...not needed on the TC as breathing is already far superior with the twin branch manifold.

[JoKer]

hang on super chrger?

[old white 73]

think we've found some suitable valves in my scrap pile, mazda fe 2l are about the right length, 2mm taller above collet groove, just a few thou bigger in the stem which will let us ream out the guides to suit.
inlet valve head needs trimmed alot but exhaust isn't too far off for what we want

[JoKer]

wow thats good info right there

[old white 73]

& we can use the s heads double springs with the mazdas valve caps, still waiting/looking for the right toyota motor to rob crank & maybe flywheel out've, by the way met a bloke who's stretched an avenger out to 2L with a cortina crank, apparently a fair bit of machining involved- went into a rally car.
theres also a dark red avenger running round otago he's stroked to 1700 offset grinding the the big ends, another x-race motor