Rebuilding a 1.7ltr and want to do some upgrades to make more power and torque .
so i need a recommendation for new pistons and barrels that slip fit the 1.7ltr case and cams to suit for better torque curve .
i manly do 911 engines so this is outside my knowledge.
also engine runs on weber carbs

European motorwerks.

Californian type 4 engine parts, machine shop, and decent advice.

The heads are your limitation, so if you can get a set of 1.8 or 2.0 liter heads, then think about building a bigger motor.

1.7 heads flow ok, but you can do more with the other two heads.

i have a set of new heads that came with the car ( the guy brought them when he parked the car up 28 years ago) but the boxes do not advise what they are , so i am just getting them measured

96mm cylinders will fit the case, no problem. They will not fit the 1.7 liter heads, though, so you will need to get those cut to open up the area where the cylinders seal.

(Note: There are 96mm cylinders that fit the 1.7 heads, but they are rather thin and not highly regarded for longevity.)

Heads (ports, valves, etc.) and cam will have the most influence on power and torque curves. Best to get the heads done by someone who knows Type IV engines specifically, and work with them on the cam selection as well. I don't know how much of an option that is for you in NZ, though.

--DD

Here is the details on the box the heads are in , doesn'tmean alot to me but sure you guys will advise

It would tell a lot more if you just took pictures of the ports on the heads or the numbers on the heads.

Here u go

Bump for info

Googled the VW number you have (021.101.371Q) and came up with possibly '74ish Bus 1.8L heads. Another site HERE says 1.7L with valve sizes that you may be able to reference.

The money shot is of the ports.

Ok port /exhurst and more numbers . Intake ports are 33mm approx

Those look to be 1.7 rebuilt 914 heads...
.and if that is the original box.....by an industrial warehouse rebuilder on Mexico.

They are 1.7 heads.

If they really are BAP exchange heads run away, run away.

so sell these and get a new set? who has a set of uprated rebuilt heads to sell

One of the better builders here in the States just commented ........HAM......your call but I wouldnt put those on my car.

......at least of that box....have somebody who knows what they are doing look at them. As you may know the valve guides and seats can be a problem.

i will but no chances , easier to sell them pay a bit more for good product. do it once do it right

Look at the exhaust ports, there is plenty of meat you can remove. Install a copper exhaust gasket and look at how much metal you can remove to "match port" . Al