Has anyone had experience with these running 204 cams?
If so what kind of gains would be expected?
im thinking of doing this over the winter

96 tc with true duals

i like the sound of the 204 cams so I’d like to keep them


thanks again

 

I do recommend them with headwork in 103s for folks that like keeping 204s but I don’t ya would get anything out of them with stock heads in a low compression 96.

 

If I were to keep these 204’s and bore it to a 103 what would the starting be like with no ACR’s or would I need to put them in?

 

Ya can get away with stock 103 pistons and heads, but what fun is that...

 

The 1.725:1 rocker arms may put the Valves to close to the Pistons when fully opened.
The SE-204 cams lift is .510 of an inch, and with a high lift rocker arm like a 1.725:1
you will need to make sure there is enough piston clearance when the valves are opened.
I would forgo the high lift rocker arms, and go with a standard lift roller rocker arms for
less valve ware & friction. Less friction also means lower engine heat in a TC 96 engine.
The Se-204 cam will work well with a 103 engine too, as they say bigger is better.

John

 

You can work it out mathematically. If your pistons have cut outs - as they all do - and you've not altered the length of the cylinder, I'll put my money on you being fine in that department. They actually come with pretty wide tolerances as stock.

On the friction front, I'm not sure how it would transfer to the lower end, but would not rollers reduce friction as they are rolling over the valve tips rather than rubbing?

 

Use 0.030" offset rocker support plate.

 

You guys are seriously overthinking this. 225s, 48s, 222s all have more lift than 204s with 725 rockers. None cause any piston interference or spring problems in stock 96s or 103s.

 

On my last bike I had 204 cams with 1.725 rocker arms on stock 103.
it was a blast,26 to 28 thousands rpm is where they come in and they do like gang busters.
still pulled good down low,don’t think I lost anything at all there.
my dyno was 96 horsepower and 114 ft lbs of torque.
and they sounded wicked,I was running a 2/1/2 header pipe and jackpots with competition baffles.

 

A 4* advance gear will aid in more delivery as well.
Scott