I just added a reed spacer to my trail modded Scrambler. I was told by HPD that it would smooth out power delivery in the low to midrange. Others have told me that this would in fact rob me of midrange and most importantly top...

Anybody know exactly how the spacer works and what the real deal is?

 

Xplor

I have just ordered one from Rick Ritter for my V Force 2 reeds. He told me they give a small kick to the bottom, but nothing real major.

TheJoka
400Scram 4x4

 

I have a Vforce Delta 2 & a reed spacer. I didn't notice any lose of power on the top but I did notice more torqe on take offs. Wheelie King! I enjoy wheeling my scram over my DS.

 

A spacer will,in effect, give you a longer intake runner. Longer intake runners generaly increase low end torque, while shorter ones increase top end. It has to do with intake air pulses vs intake valve/port opening. Its kind of a long explanation.

Andy G

 

Andy,or someone who knows?
when you have the time,please explain this spacer in more detail?I ordered one today from RcR and am unsure what its purpose really is?I also have a Dynoport pipe/silencer/spark arrester coming,along with the Delta 2 V-force reeds.Is all this reed stuff really worth the extra 175 dollars?I know the pipe makes a huge differance on the 2-strokers,however,im not certain if im wasting my $$ on this reed stuff,Thank You,
Bill

 

In my case, the Delta V-Force reeds made a very noticable difference. It gave better responses over the whole powerband. I would recomend them.

 

Bill
I have a Delta V Force rad valve on my 400 and I really cant tell a differance.
The throttle response is slightly{and really mean SLIGHTLY}more crisp but other than that I cant tell any differance at all.

However,i still have the stock pipe on mine but if you have an performance pipe, it would probley make more differance.

With a stock motor/pipe, an aftermarket rad valve is a waste of money IMHO.

Andy G

 

All of you........Take your reeds and spacers off, step out the front or back door and sling them as far into to the woods/road as you can.



Just kidding.



Going back to the general rule of "one thing effects another", your not going to feel the impact of the reed spacer combo unless your flowing more air.

In essence, w/ the reed cage/spacer, you'll be sucking more air, but w/out a pipe your not accomplishing much b/c you dont have the added space needed to get rid of all this new air your sucking.

W/ a pipe, you'll definantly fell a difference in throttle response as QuadFather praised. W/out the pipe, you'll feel a tid bit of difference, but you'll not get your $$$$'s worth out of the reed cage/spacer until/unless you get a pipe at least.

For anyone who is looking for a little more snap and low end, it is "said" that the Boyseen Rad Valve is gear a tid bit more towards low-end HP compared the the Delta Reed Cage. They both give you the same advantages, but the power is in a "slightly" different place.

Personally, I have the Delta 2's.

You really cant go wrong either way.................unless you dont have a pipe.

EC

 

Everyone,
thanks for the explanations.Im glad I have them,
Bill

 

Bill,
The reeds are very important. You can do whatever you want to the engine, if your reeds don't get the job one, it will be worth nothing. See how a 2 stroke works? When coming down, the piston pushes the mix from the crankcase to the combustion chamber. So if the reeds do not seal perfectly, then fuel will go outside instead of inside the cylinder. I guess you know that the reed spacers go right after the reeds. The smaller the crankcase volume, the quicker the transfer will be done. But when you transfer the fuel too fast, it will not be equally distributed in the combustion chamber (thus causing a slightly poorer torque, compared to a non spaced engine). But at high rpm, you will transfer more fuel in the cylinder, even if the distribution is a bit poorer, thus giving you a bit more power.
This is a simplified version of what I understand (if I'm wrong, someone say it!!), although I'm not a fluid dynamics engineer (yet!).
But we're talking very minimal gains/loss here...when it doesn't change anything ,people talk about throttle response...