Need Raby 9590 cam info Options

[Frank S]

Happier with a stock cam, no. A stock cam engine get max 95-100hp on a great day most don't even come close to that on a dyne.
The Raby cam wakes up the engine to 115-120hp and runs cooler. Yes, it takes time to tune the MPS and get the timing right but big deal. Oh and it idles at 1000rpms and sounds great. (IMG:style_emoticons/default/beerchug.gif)

Hi Geoff,
it looks like I'll oder a cam kit from TypeIVStore and use just the upper part of it with a stock cam in first place. If the car is once registered I can upgrade with the 9590 and the lower valve train plus springs...
Much easier to dial everything in if I can drive the car.

Are you running the original distributor with a limitation on centrifugal?

Best Regards,
Frank

[Dave_Darling]

You mean that the poster is being tested in Germany not California?

No, I mean that the CA guys don't actually have much experience with getting the 9500-series cams past the sniffer test. Because very few 914s actually have to pass those.

--DD

[SirAndy]

No, I mean that the CA guys don't actually have much experience with getting the 9500-series cams past the sniffer test. Because very few 914s actually have to pass those.

Ok, now your post makes sense. You could have said that the first time around ...
(IMG:style_emoticons/default/poke.gif) (IMG:style_emoticons/default/biggrin.gif)

[Highland]

To get the recommended 14 degrees BTDC at idle is there a recommended distributor or modification?

The best I can do is 6 degrees BTDC at idle with a maximum advance of 30 degrees at 3500+ rpm.

[euro911]

I'm sure there are some really knowledgeable gear heads here that could answer the question, but I'd also post it on the ShopTalk forum.

My 2056 with a 9580 cam is running a VJR-4-BR-8 from a 36HP VW Bus




Bus & Pickup Mar 1955-1959 * 36HP

Distributor: VW 211-905-205E, Bosch VJR 4 BR 8/1 (0231 129 019)
Can Use:
Points: 01 001
Condenser: 02 170
Rotor: 1237 332 072 (NLA) - Can use 04 008
Cap: 03 019
Coil: 00 001 (Blue Coil: 00 016)
Vacuum Can: None
Ignition Wires: 09 001
Spark Plug: W8AC
Timing Set At:: 7.5° BTDC Static
Advance/Retard Range: 27° @3400 RPM See diagram (Glenn, the ultimate dizzy guru, says the spring rates and weights are the same as the VJU-4-BR-8 and the VJU-BR-8 shown)




You might want to contact him too: Link to Glenn's site

[Jake Raby]

To get the recommended 14 degrees BTDC at idle is there a recommended distributor or modification?

The best I can do is 6 degrees BTDC at idle with a maximum advance of 30 degrees at 3500+ rpm.

Then your dizzy has too much built in advance. This must be limited to around 16 degrees, so you can achieve 12-14* at idle, and 28-30* degrees at full advance.

This makes a world of difference in idle quality, as well as all around performance, and fuel economy, not to mention CHT and OT control.

[toon1]

To get the recommended 14 degrees BTDC at idle is there a recommended distributor or modification?

The best I can do is 6 degrees BTDC at idle with a maximum advance of 30 degrees at 3500+ rpm.

Then your dizzy has too much built in advance. This must be limited to around 16 degrees, so you can achieve 12-14* at idle, and 28-30* degrees at full advance.

This makes a world of difference in idle quality, as well as all around performance, and fuel economy, not to mention CHT and OT control.

Since we're on this subject( and a slight hijack).....

Jake, do you have a suggested timing curve you can post for these cams?

I've been tuning and things are going good but one thing that has me stuck is the correct timing at different RPM's.

BTW...I went in to adjust my rockers this w/e and after about 3500 miles, it was not needed. Been running B.P. oil and it's been working great!

[Highland]

Can someone tell me the solution to limiting the advance on my distributor?

I'm not sure how to proceed to solve the problem.

[Highland]

Is everyone else running a programmable ignition controller when using the rat 9590 with d-jet?

Would I need to purchase something like an MSD 6A to use a RAT 9590 cam?

[Jake Raby]

Is everyone else running a programmable ignition controller when using the rat 9590 with d-jet?

Would I need to purchase something like an MSD 6A to use a RAT 9590 cam?

Absolutely not. Most have stock distributors, set up as factory, or with DIY modified advance limitations.

I know of no one using an external gadget like you mention with the 9590, or the 9550 camshafts.

[914_teener]

The type IV Store does not offer the 9550.

Am I missing something?

[TheCabinetmaker]

The 9550 is an earlier version of the 9590.

[toon1]

The type IV Store does not offer the 9550.

Am I missing something?

The 9550 isn't offered anymore. I have one in my car. Not a "power cam" but I am getting 39mpg out of the 1.7.

I'd like to see how the 1.7 would perform with the 9590 but I don't think it would get the MPG's.

[Jake Raby]

The type IV Store does not offer the 9550.

Am I missing something?

The 9550 isn't offered anymore. I have one in my car. Not a "power cam" but I am getting 39mpg out of the 1.7.

I'd like to see how the 1.7 would perform with the 9590 but I don't think it would get the MPG's.

The intake profile of each is exactly the same between 9550 and 9590. The exhaust profile slightly changed to be more compliant with ethanol and oxygenated fuels.

[toon1]

The type IV Store does not offer the 9550.

Am I missing something?

The 9550 isn't offered anymore. I have one in my car. Not a "power cam" but I am getting 39mpg out of the 1.7.

I'd like to see how the 1.7 would perform with the 9590 but I don't think it would get the MPG's.

The intake profile of each is exactly the same between 9550 and 9590. The exhaust profile slightly changed to be more compliant with ethanol and oxygenated fuels.

I've been doing a lot of tuning lately and it seems like the cam likes a lot of timing on rpm ramp up.

My idle timing is 14*, by 2200 rpm I'm already at 24*, 28-29* at 3500. No ping lots of power and 15:1 Afr on light throttle( around town driving).
Freeway I can cruise around 70 with good MAP and about 14.5:1 AFR.

[914work]

Now THAT'S useful information.

[toon1]

Now THAT'S useful information.

I'm running megasquirt so I can control the Timing and fueling.

I am just now starting to realize how much of a benefit this is for these engines.unfortunately my poor little 1.7 has been the abused sacrifice of my FI learning curve.

[914_teener]

Now THAT'S useful information.

I'm running megasquirt so I can control the Timing and fueling.

I am just now starting to realize how much of a benefit this is for these engines.unfortunately my poor little 1.7 has been the abused sacrifice of my FI learning curve.

I am more in line with the original post.

I have been looking at this cam for a while for a 2056 with stock injection.

Geoff (Bleyseng) says it requires some adjustment of the MPS. I'll assume he is running a stock distributor.

His feedback is very positive. I think it is almost mandatory to have a CHT gauge and AFR gauge or instrumentation for tuning.

All I have left to do is choose the cam.

[toon1]

The cam ( IIRC) was designed for stock FI.

If you had an AFR gauge there is not much adjustment that can be made.

CHT...IMHO is a must, just to know when the temps start to rise you can back off or pull over and let it cool. don't scrimp, spend the money and get the Dakota digital

[Frank S]

I've ordered all the parts I need for the rebuild and the last open question I have is:
What is the optimum CR for 9590 if I build up the 2056 from 2.0 D-Jet for a 914.
Once Jake reported very good results with a 9560 cam and a CR of 8.8 : 1 and I'm not sure if I should go for CR of 9 : 1 with my build.
Any recommendations?
Thanks,
Frank