Engine: 140 1986cc B20E: Camshaft Specs

[Dylan144GT]

Hi All

Can anyone help me out with the specs on a D grind cam shaft used in the B20E Engine? Want to see what it'd cost to get one made up here is SA as they aren't that readily available here. Also avoids import duties, shipping and all the rest of it.

Thanks
Dylan

[B20F]

Here you can find all the cam specs used in the B20 and more.
http://www.1800philes.com/ianr/_superlist_grinds.html

[Dylan144GT]

Thanks B20F. I was looking around some more after I posted this and I found your link! But your response is much appreciated!

Looking for a slightly more agressive cam than the standard. Been advised on a previous thread to go for the D grind. Is this the consencous or does anyone have a better suggestion, ie, K grind. Using it on a B18B 10:1 compression engine.

Dylan

[B20F]

To profit from the D or K cam (not much difference in performance with a slight preverence for the D) you need twin carbs and a good flow exhaust manifold The late B20 amazon exhaust manifold has the best flow but are getting pretty rare and expensive. (Don't know which is on a 144GT) Or opt for a good 1-2-4. But remember that the D and K are old developments. Nowadays there are better option cams with a modern grind. They can provide much better torque over a wider revs range. Look for example at IPD's site in the US. But as I say, you need to adept the exhaust and the fuel delivery to the cam of your choice.
http://www.ipdusa.com/Volvo-140/c-1-78/

Just for inspiration take a look at this site;
http://www.v-performance.com/

[222s]

Originally Posted by B20F

The late B20 amazon exhaust manifold has the best flow but are getting pretty rare and expensive.

Just to confirm, that's the cast iron twin downpipe?

Can't comment on the other cams but I have a D fitted to the B20 in my Amazon. Engine spec is twin SUs (with normal needles), cast twin downpipe & Simons (large bore) sports system exhaust. The result is very tractable, but still has plenty of go high up. Idles smoothly at when warm (idle set as low as possible & choke stops adjusted so that the initial movement lifts the idle when cold) & will happily pull from about 30mph in o/d top, but still has enough go at high speed for accelerating up motorway hills without the need to change down to 4th.

If you're after a cam for normal road use, I'd say that it does a very good job Can't comment on whether any of the hotter ones would be better though.

Link to cam origins / applications:

http://www.volvoforums.org.uk/showpo...78&postcount=8

[B20F]

Just to confirm, that's the cast iron twin downpipe?

That's the one I mean. The same one as fitted on the B20E/F. In the Volvo
(R)alley spec engine back in the sixties this manifold was used up till 150hp. Above that Volvo fitted a 4-1 manifold, as that one produces more power up the rev range with a S-cam. My second one just cracked, so now I ordered a 4-2-1. One of the reasons the're getting rare is that they tend to crack. I've had enough of trying to weld cast iron!

[Dylan144GT]

Hi guys

I am awaiting a pair of SU's and an early alloy twin intake manifold. It should arrive at the end of next week if my stars are aligned properly. I presently have the later twin down pipe intake/exhaust manifold for a single SU/Stormberg which I plan to separate the exhaust part from and use it with the alloy intake. I'm using it on a late B18 with the 10:1 compression so it should be verrrrry nice with the addition of a D cam - I like that it will be a nice daily drive too as confirmed by 222S.

Thanks B20F & 222S

Dylan

[Dylan144GT]

So, the next question is...What are the thoughts on reprofiling a standard C cam to a D cam? Was on the phone to two companies today and one recons its possible, no problem. And the other recons its possible depending on the condition of the cam because it might come to a point where the cam lobes become to small. I was under the impression that the remanufacturing of a cam is where you build up material on the lobes and then grind it back to spec. Is this wrong? Can anyone share their experiences and expertise with me please?

Dylan

[222s]

Does the cost & effort of regrinding really outweigh the expense of importing a brand new one? They're not expensive, and IIRC the price is the same irrelevant of whether it's an A or a D spec cam etc

Also aren't the lobes meant to be hardened?

[Dylan144GT]

Unfortunately yes, it does out weigh the importation cost; remember there is the import duty (which is 34 percent of cost price in SA) and the shipping to consider (which is a killer when its something made of steel). To get one reprofiled here in SA is about half just the cost of a new one. Joys of the South African economy at the moment! So I'm trying to stretch the brain to come up with a creative solution!

Dylan