7 replies to this topic

[Mart8V]

I have picked up a 544 cam (Kent?) with a 998 pocketed block. Seems to be little wear and was thinking of using it.

How wild are these? Have not come up with much thru web searches or the search function on here so far...... Looking to build a fast road 998 but not sure which cam to use.

Thanks!

[JetBLICK]

544's an old bmc profile, tho kent cams do still make them if not a little bit tweeked. They're good cam's im told, liken them to something in the region of a 286. Should work nice in a 998, i had a 998 with a 286 in and that was lovely, had to use the gears tho

[Mart8V]

Thanks for the info- was thinking of combining with a 12G940 head and some 1.5 rollers etc. I had a 276 cam in mind but as I've already got the equivalent of a 286 I might keep it....

[JetBLICK]

do the 12g940, but dont bother with the 1.5 rockers - thats just gonna end in tears and a bill for a broken engine.

[Mart8V]

Broken thru valve problems or because I will overload it?!

[minipac]

Broken thru valve problems or because I will overload it?!

here is the spec of that cam if it helps

Application Power Band Cam Lift(mm) Valve Lift(mm) Duration Timing Full Lift VC (mm) LTDC Required Parts
Fast Road - Rally 2500 - 7500 7.99 9.82 274 Deg 27/67 67/27 110 Deg 0.40 I 1.85mm CF1 / VS2

if you cant understand that as i just copyed and paste look here http://www.kentcams.com/

Edited by minipac, 27 May 2008 - 06:53 PM.

[JetBLICK]

Broken thru valve problems or because I will overload it?!

Too much lift, you run the chance of putting a valve through a piston, and even if that doesnt happen, you'll have a big flatspot till 3-4000rpm because the airspeed will be too slow.

1.5 rockers are not the kind of thing you just slap on, you need to work out first if they will work on your engine. They will either unleash that little bit of extra power - in most cases you need big cc's, or in the case of the majority of small cc engines reduce power considerably.

[Mart8V]

Broken thru valve problems or because I will overload it?!

here is the spec of that cam if it helps

Application Power Band Cam Lift(mm) Valve Lift(mm) Duration Timing Full Lift VC (mm) LTDC Required Parts
Fast Road - Rally 2500 - 7500 7.99 9.82 274 Deg 27/67 67/27 110 Deg 0.40 I 1.85mm CF1 / VS2

if you cant understand that as i just copyed and paste look here http://www.kentcams.com/

Thanks. Had a look thru the index on the Kentcams site but I must have missed all that. Much appreciated!

As for the rockers am happy to take the advice- am new to building a-series engines.