1500 v 1600?

[oldschool]

Did the GT/GLS also have a dupelex timing chain?

Hard to say...it depends on what parts were handy on the assembly line that day...lol
I think the 1500 'S' motors generally did, but the 1600's didn't and you can't tell from the width of the timing cover either...you need to remove the sump to check for sure.
My old Super had a 1600 double valve spring motor and a wider timing cover, indicating it had a duplex chain, but when I removed the sump I found a single row chain?!
My 1600 double valve spring Alpine has a narrow timing cover and I was quite surprised to find a duplex chain squeezed in there when I removed the sump!

[blekkja]

Yeah those 1.75" CD's/SU's are a good idea. Pretty well impossible to find factory ones, just get a Rover 3500 1.75" one and modify the 1.5" inlet manifold to suit, similar to what Azza1600 did.

Yeah my car is at the shop now getting the carbys overhauled and tuned. Dude is struggling to get them exactly right, and this is with him already seeming to manage to work some serious magic.

I really only upgraded from the 1.75 due to finding it impossible to track down a replacement air filter housing (I cooked mine on the extractors: tighten your bolts!), and being offered a set of twins for cheaper than I could buy an aftermarket filter housing for. But it has meant swapping out the linkages, choke cable right down to the pedal box to get them up and running. Been a right pain in the arse. If they continue to give me grief after their rebuild then I am ripping them off.

[streetracer75]

Ok this is all great information you guys have given me. Thanks to all who have replied.

Wish me luck now trying to work out a deal for the car I have my eye on.

I will have a ton of other questions later!

[avenga]

Get some dual dellortos. They just look better   

[blekkja]

I miss my delortos. Unfortunately they were just a tad too angry for the stock GLS set up.

[streetracer75]

Get some dual dellortos. They just look better   

Are they better than webers on an Avenger?

[avenga]

Are they better than webers on an Avenger?

Yeah Dellortos are much better than webers. Here is a post I wrote about it a while back. I think it was something like 14hp difference on a 160hp race engine.

Webers don't work as well on the Avenger, it is down to fuel atomization size, the Dellorto's have smaller fuel droplets than the weber, which is what the Avengers like.

David Vizzard did heaps of testing on them back in the day, here is a link to a article about it. http://s1340.photobucket.com/user/Catsman1/media/MoreAvengerTuning1_zps286cdfb0.jpg.html?sort=4&o=26

zoom in and read the Avenger tuning articles, it goes in to great lengths about the weber vs dellortos, I posted some parts of that article somewhere before but I can't remember where.

[Paddy75]

Yeh Series 6 had the CD175 for the High Performance models (both 1300 and 1600) replacing the TC setup.

Did the MK2 GLS still have the CD175 I wonder?

[streetracer75]

Will the inlet manifold from a Sunbeam TI fit a 1500 Avenger and could Dellortos be mounted on this instead of Webers? I know someone local who has one of these for sale.

[avengertiger]

Yes the inlet manifold will fit the block,not sure if dellorto and weber have same bolt pattern I would presume they do.
Google images of both and compare.

[streetracer75]

Get some dual dellortos. They just look better   

I am surprised you have not fitted blue hoses with that set-up?

[avenga]

I was thinking of that but I wanted to keep the classic black hoses. I wanted to keep it sort of looking like a period rally car would.

My V8 will probably have fancy hoses etc.