L-series heads & interchangeable cams?

[kingofapes]

Hi, I recently bought my first Z, a -74 260z with stock block, mn47 head and currently running 4 barrel holley. header and 2,5" exhaust.

I'm getting a 280z fuel injection which I am planning to run by MS. The engine will stay N/A and needs to be town driveable although I'm willing to sacrifice that quite a bit for performance. I just came across a new performance cam for sale: "Datsun 240Z 260Z Schneider Performance Camshaft. New camshaft for an L series 6 cylinder engine.

Part Number: 17034. Lift(In/Ex): .460/.460. Duration(In/Ex): 270/280. "

 

now my question is are L-series cams interchangeable ie does this one fit my mn47 head? what do you think what sort of characteristics this combo would have?

I am planning mods on the head at some point,and am not in a hurry with the cam either but wanted to know if this would fit and be suitable. the price seems reasonable so I could buy it if it fits..

[kingofapes]

Hi again,

 

I simplify my question: are different L-series heads' camshafts interchangeable? I've tried googling this and using the search but to no avail. As this is my first car with an L-series engine I obviously don't have much experience of the different heads that can be used on an L-engine.

 

Mine is MN47 and would like to know more about what cams fit. any insight into this will be appreciated.

[jc052685]

They all interchange except for the p90a head.

[kingofapes]

They all interchange except for the p90a head.

 

 

thank you

that's what I need to know.

Additionally, do people here have experience on the Schneider Cams? The one I mentioned before interests me as it fits my currently tight budget. With my experience it's hard to tell the actual impact that cam would have on my engine, and as it is hard to find specific info for cams on L26+MN47 any comments on that will be appreciated. I forgot to mention earlier that I'm running a pretty fresh Mallory Unilite dizzy, but once I go for MS I am planning to replace that by EDIS.

Also I'm far from trying to get the last HP out of the combo, so on that basis, would you guys think that cam is worth investing in? I'm sure there are far more exotic alternatives but at this point it seems to make more sense paying say 100-150$ for a cam that improves the performance and works well with my future EFI+MS+EDIS combo, instead of paying 1000$ to get to a field where I'd need even more mods on the engine to take the full advantage of the cam.

I'm not familiar with Schneider though, so I am trying to find some user feedback on the product.

[Lazeum]

You can physically interchange the camshafts to any head.

You'll have to make sure springs, rockers and lash pads are matching your new cam.

 

Afterwards regarding your engine & performance, you might have to adjust your timing in order to get the most out your new combo (Detcan, AFR wideband would be a must).

Since you have a mallory Unilite, it is a very simple operation to do to change your timing. Since it is free (but time consuming) you should proceed. I use several drill bits with different diameter to adjust total timing.

 

=> Looking at your location you might be close to me. If you did not have any support in France, you might want to check out French communities if it hasn't been done yet (I don't know neither your pseudo nor your setup).

Edited September 29, 2010 by Lazeum

[kingofapes]

You can physically interchange the camshafts to any head.

You'll have to make sure springs, rockers and lash pads are matching your new cam.

 

Afterwards regarding your engine & performance, you might have to adjust your timing in order to get the most out your new combo (Detcan, AFR wideband would be a must).

Since you have a mallory Unilite, it is a very simple operation to do to change your timing. Since it is free (but time consuming) you should proceed. I use several drill bits with different diameter to adjust total timing.

 

=> Looking at your location you might be close to me. If you did not have any support in France, you might want to check out French communities if it hasn't been done yet (I don't know neither your pseudo nor your setup).

 

Hi Lazeum,

Nice to have French colors here too! The trouble finding info on french communities is that my french on technical terms is very limited and I end up spending a lot of time trying to really understand everything. Also there aren't that many Datsun specialists in this country as you probably know.

Anyway, as I just purchased my Z recently I haven't done any timing adjustments so don't even know how that mallory adjustment works. Will look into that and if you can spare a tip quickly that'd be nice too.

I think I may be buying that cam, and if it turns out not to be a good one I can always sell it.

btw I'm in the southeastern part of the country, so not really close to you.

[Sam280Z]

All L series cams will physically fit in any other L series head. At a minimum, you will want to make sure that the oiling system is compatible. If you put an externally oiled cam in a head with no oil spray bar, the cam won't last long...

 

Sam

Edited September 29, 2010 by Sam280Z

[Lazeum]

Anyway, as I just purchased my Z recently I haven't done any timing adjustments so don't even know how that mallory adjustment works. Will look into that and if you can spare a tip quickly that'd be nice too.

I think I may be buying that cam, and if it turns out not to be a good one I can always sell it.

 

Here's the link from the French forum where you could see some pics of the distributor.

http://www.datsun-france.com/forum/showpost.php?p=19284&postcount=44

 

There'are some Datsun fans in the south of France, some are knowledgeable (a Datsun 240z GrIV is being built over there )

To setup up your timing properly, you'll either have to do some test on our own or find a specialist to tune it right but it might cost a lot for little gains.

 

I had a Schneinder cam (stage 2 - 274/274), the car was fun to drive (with the new Rebello cam it is even better!!!)

[kingofapes]

Here's the link from the French forum where you could see some pics of the distributor.

http://www.datsun-france.com/forum/showpost.php?p=19284&postcount=44

 

There'are some Datsun fans in the south of France, some are knowledgeable (a Datsun 240z GrIV is being built over there )

To setup up your timing properly, you'll either have to do some test on our own or find a specialist to tune it right but it might cost a lot for little gains.

 

I had a Schneinder cam (stage 2 - 274/274), the car was fun to drive (with the new Rebello cam it is even better!!!)

 

 

Thanks again guys. I was in touch with Schneider directly and was told the cam in question is great for carbed setup but as I'm planning EFI the lobe center would need to be wider, ideally 112 degrees while in this cam it is 107. So I won't be getting this cam but will keep looking for good alternatives as I'll be getting the EFI in the winter and not sure when I will be installing it.

 

good to hear about the french Datsun fans, might be good to get in touch with them especially once I'm in the process of doing the upgrades. I just registered my Z and for a while definitely just want to drive. Planning future mods without rush while enjoying the ride

I'll have a look on the pics of your mallory at home, can't get them open at work (websense)

Are you willing to share details about your Rebello, Lazeum, and your setup in general, and what kind of use your Z is for? Maybe you already have that stuff on the datsun france forum?

[Edmund]

Great website for mode, hope this help: http://www.datsunzgarage.com/engine/index.htm

 

Ed

[Daphur280]

They all interchange except for the p90a head.

 

SORRY if this seems like a noob question, just for clarification: Do you mean the p90a cam will not interchange with any other head, or no other cam will fit onto a p90a head, or both?

[kingofapes]

Great website for mode, hope this help: http://www.datsunzgarage.com/engine/index.htm

 

Ed

 

excellent read, instantly bookmarked

[kiwi303]

SORRY if this seems like a noob question, just for clarification: Do you mean the p90a cam will not interchange with any other head, or no other cam will fit onto a p90a head, or both?

 

the P90a is Hydraulic lifters, everything else is Mechanical lifters.

 

I'm not a cam guy, but the cam shops I've browsed online segregate mech and hydro lifter cams by types, so I suspect it's the case that the hydraulic lifter equipped head needs a hydraulic spec cam.