DeLong cam specs?

[RAT510]

I purchased a camshaft a while back online and the only info I got with it is pretty much what is stamped on the end off the cam. DELONG 304-08. would anyone happen to know what the specs are on this cam and how I should set it up? I could probley find out by using a cam doctor but it takes time, money and I would need to post it there and back so thought I would ask here first.

[banzai510(hainz)]

Delong is a name thats been not used for a long time in the Datsun world

To me just going by the 308 is a duration which to me is a bit to LONG anyways

 

I would just go with Datsport advice and parts. esp the Lash pad stuff. The stuff is starting to dry up here. Still can get but got to be in the know

[datzenmike]

Measure the high and low points on the lobe, subtract and multiply by 1.5 for the lift. Stock L20B is 0.413" and duration is 248 degrees. Lifts above (around) 0.470"  is close to binding or 'stacking' the stock valve spring.

[RAT510]

thanks for the feedback guys. I measured the lift and at the cam its about 0.290" so approx 0.435" valve lift. I doubt duration would be that big to be honest I think its pretty mild. All I was told it was John DeLongs hot street cam and its fine with std springs. 

 

I know that the DAMB cam is based on a DELONG 360-08 and it has a gross lift of 0.540 and a advertised duration of around 290 deg. id like to get my hands on an original one of those.  

 

to be honest im not that concerned about the actually figures as such or trying to install the biggest cam I can find but it was more about dialling it in properly. I trust it would work well by the look of it. the grind job on it is perfect ive never seen a regrind like it. ive been told by a few engine builders its a nice looking cam as far as the finish and the shape of the lobes is concerned. I guess ill have to send it off to get measured.

 

I was thinking of just setting it up as per a std cam like in the manual etc but don't feel to good about doing it that way.

[nad015]

Are you building an engine?

Are you going to degree the cam with a degree wheel??

 

If so you can measure the duration with the degree wheel.

 

Do a check on the intake and exhaust.

 

Check the lift with a dial gauge on the retainer.

 

If it's a symmetrical cam, set the cam timing with centre angle method.

 

I wouldn't send it away to get measured, unless it's really cheap to do.

[RAT510]

Hi Nad 015. Yes im building a 2.1 longrod for my 510 and also need to put together a daily motor for a 910 runabout. The daily is nearly done just need to sort a cam as the stock one i have is worn. Im aware i can use a degree wheel to set the cam but how would i know if its advanced or retarded without any setup info. Im not sure if it symetrical or not.

[Nuclear Water Boy]

Measure the high and low points on the lobe, subtract and multiply by 1.5 for the lift. Stock L20B is 0.413" and duration is 248 degrees. Lifts above (around) 0.470"  is close to binding or 'stacking' the stock valve spring.

 According to the How to Book, stock valve springs are not suitable for lifts in excess of 0.440-0.460 inch and they stack solid at about 0.500"

[Nuclear Water Boy]

I know that the DAMB cam is based on a DELONG 360-08 and it has a gross lift of 0.540 and a advertised duration of around 290 deg. id like to get my hands on an original one of those.  

 

 

I ran one of those DAMB cams in my LZ2.2 from Kelvin Dietz and I'll tell you what!!!! It was one of the best performing quietist cams I have ever ran. Naturally proper cam geometry setup goes a long way in both performance a rattle or no rattle valve train.

[banzai510(hainz)]

you can do about 470 before the inner stacks up. One can mill down where the washer goes .020/.030 thousands where the spring sits on the washer.

 

 

I use on stock spring and one Nissan motorsport(think its Isky spring) inner or outer doenst matter as I did 2 motors

[nad015]

I'd check the duration of the intake and exhaust.

If there the same, try and get max lift on the intake and exhaust at the same degrees.

 

Have you got an adjustable cam wheel, whitehead performance sell a cheap 8 hole cam wheel.

 

Also baz at datsport can drill you an 8 hole cam wheel, when you call him, buy a stock cam off him if he has one and just use that.

[RAT510]

I ended up measuring the cam and it has 0.303 peak cam lift (which i already measured a while ago) and 290 duration. Duration @.050 is 224. Its going to be a while before i get it up and running but im pretty keen to see how it goes even though it doesnt have much lift?