L16 camshaft

[Jonathan Rowe]

I've just put a piper BP300 spec cam in my newly built engine.They tell me its similar to the ones used in the ford pinto engine.

So far its not producing any increased power( the cam timing has been doubled checked as has everything else).

Has anyone been down this route? and or can you recommend a different profiled cam.I'm after a rally spec, not full race engine. The head has been ported, twin 45 webbers, and bespoke SS exhaust with the right lengths and diameters.

[banzai510(hainz)]

Whats the specs?  we dont kno wwhat it is.

 

soemtimes going bigger goes backwards.

 

if tyou need better info Byron510 on" the 510 Realm" know alot about cam swaps

 

yes its simaliar type cam set up like a pinto. also a mecedes and BMW of that time period so this really doesnt mean all to much.

[Tristin]

How do you know its not producing anymore power? Did you dyno the car before and after the install?

[banzai510(hainz)]

if you had a big cam in there and go to another big cam if might be hard to tell as these are small motors. alot of people think you get a biggegr cam you automatically get 20% more HP. thats isnt going to happen. maybe a 5 hp 5 pund torq difference between the 2 at certain rpms.

But going by what you done already to the motor you know this already.

I guess a Dyno will be the only tru sence.

[Tristin]

Exactly. The benefits to a cam profile change isnt always just a direct increase in power. Could be a smoother power band, could be higher horsepower only in the low range, only the high range, could just be mostly torque increase... without a dyno you cant really tell unless its blatantly obvious. 

[Jonathan Rowe]

Thanks guys,

Yes it has been dyno'd thats how I know.

The problem I've got, is that here in the UK, nobody has any info on the engine or any parts.

Any contact details of cam supply would be great

[Tristin]

So you dynod it before the install and after the install?

 

Looking at the website for that cam, 316° seems like a lot but maybe thats because Im just new to Datsuns and theyre OK with that. Ive never used anything larger than a 290° and that was a very high HP Evo. 

[Jonathan Rowe]

yes dyno'd before and after, I'm now  looking at ISKY racing cams in Canada, anyone used them or info abt them?

[banzai510(hainz)]

Isky is out of California. Most of those cams are old grinds that been there for years.

 

could yout ell us the power you got out of this?

 

like I said I think you should contack Byron510 on the 510 realm. he has dont alot of cam swaps with his crew up there.. He is also on here maybe you can PM but I havent seen him lately.

 

I guess alot depend on your gear ratio set up also if running a L16.  maybe even going to 40s would be better for a rally car. But I dont really know. Sounds like you lnow more than us already. but Byron has done alot of Dyno runs with different cams.

 

also you have a supplier of valave train parts.?????????lash pads retainers ect...I know those are hard to get in England. Most you guys like the Pinto motors

[Jonathan Rowe]

Its back on the dyno this afternoon with the new exhaust, I will let you know.

[Jonathan Rowe]

Well new exhaust works. 113bhp at 6000 which =100mph
Thats with 318 duration and 106 full lift and ignition set at 33degrees
Is that good for an L16? I was hoping for around 120bhp
Next step try and find a 4.1 or 4.4 diff

[datzenmike]

Ignition could go 35-36.

113 is about the same as our L20Bs on a good day. That's impressive.
What ignition system do you have in it.

I guess a Subaru diff is what you need?

[Jonathan Rowe]

I tried 35-36 power just dropped off, I think I will have to be happy with this for a bit.

I've got an old L18 in the garage so if youv'e any tips on getting the most out of that?

[datzenmike]

Race L motors run higher but total timing is a combination of many things. Worth a try.

 

Are you running an electronic ignition?

[Jonathan Rowe]

yes Lucas electronic