Thread: Kelford 184-C on the Dyno - Progress so Far.

Any news regarding camshafts that Miko says?

I haven't heard from Dre about those, he may have contacted Kelford direct.

Is 18-21" range from TB to Filter optimal for pressure/velocity then?

^How much shimming did you have to do? I noticed you said the 184-C's were slight bigger than the N1's. Not much of a different? I plan on running a 2.0L bottom end, 4-1 header, and some kind of after market IM with a larger TB. As I've been reading lately, I'm up in the air on what pistons to go with. SR16VE or off the shelf mazworx 12.5 CP pistons.

http://www.sr20-forum.com/197250-post7.html

http://www.sr20-forum.com/197262-post9.html

^They come in 87mm, but I wonder if they make 86mm. I just sent them a PM.









^This is a very nice thread and I would like to know if any more information has come from the 184-C cams. I see that there is some shimming needed instead of it being a straight drop in cam.

Are these the newer revised profiles?? Or the older version. I'm almost positive the newer version are straight drop in. Although id recomment u check clearences w them installed

Must agree this is a great thread, I have a P11 SR20VE with the Kelford 184-C cams as well and found the exact result with timing adjustment. We tried 8 settings of + and - on both cams with zero change as Clint did and were baffled by what the restriction was. My power was peak of 179Hp at the rollers but held peak power from around 6500 thru to 9000 without any drop off, great power band but not a normal type. Anyway we will continue with changes and testing as I need around 200Hp at the tyres for the class of racing i'm in.

By the way a side note on the 184-C they aren't a drop in as the lift is too high for standard springs (12.5mm) so if a straight drop inno shims are what someone is after mybe stick with the N1 cams.

Geoff

Thanks for the feedback on the 184-C.

Are you saying the Kelford 184-C held peak power up to 9,000? The reason I'm asking is because Clint's engine peaked power dropped off after 7,400 rpm.

What's your setup?

It held power nicely flat as a table.

4age Itb's are in his setup

Yep mine held through to 9000rpm with only a 2-3 Hp wave or flutter between 6500-9000. , engine setup is pretty basic with a P11 SR20VE 184-C cams supatech valve springs with Ti retainers, std valves and porting,
N1 pistons uncut, std rods and the std VE crank balanced. A cromoly flywheel and excedy clutch. Intake is a set of the black 4age 20valve quad 45mm. Exhaust is is a one off 4 into 1 I made to spec's of my engine builder and I feel still need tweeking. So as you can see its a real basic and budget build but produces a real good power band so makes it competitive in my class of racing ( Improved production under 2 litres circuit racing) but still leaves me chasing them Honda's, although recently at our nationals it ran 2nd to a AE82 with and Altezza 3SGE Beams engine on our biggest horse power track in Oz, with our big horse power Honda 3rd. Seems the SR20 torque is better than the Honda K20's so with another 20Hp will be a real challenger.
My next test will be a set of 44mm slide throttle's to see if they pick up air speed in the inlet.

^I thought Kelford was doing a redesign for these to be drop in cams. I don't mind using cam gears for fine tuning, but I wouldn't want to spend $750 for cams I would still have to do extra work to. I couldn't justify it for what I would want out of the motor. I'll be staying with the 2.0L bottom end on with a 12.5:1 compression ratio. Maybe N1's are for me lol.