R&D Mani vs Stock

[Christopher]

Can someone please inform me of the advantages of going with an aftermarket mani vs the stock Mani? Just picked up a set of Vforce Reeds and am curious to know if there will be a difference between through them on a stock Mani or a R&D.

 

[Yami-Rider]

The r&d I had was for 44s vs stock being 38s

 

[Vortex]

The a/m manifolds usually delete the intake crossover, have a better port match, and you can fit 44s/48s

 

[Pro-pulsion]

I had an R&D intake that had the crossover. It was meant for 38-44 if I recall. I contacted R&D about it to ask what version they found was better suited for freeride. They responded with the crossover version was a better freeride part, they said it had snappier throttle response. I personally have since gone back to stock because I prefer the fitment ease. The R&D and Riva manifolds from what I have read both have a narrow carb base putting the carbs closer together. It makes fitment of the carbs a little bit of a chore.

 

[Quinc]

I had an R&D intake that had the crossover. It was meant for 38-44 if I recall. I contacted R&D about it to ask what version they found was better suited for freeride. They responded with the crossover version was a better freeride part, they said it had snappier throttle response. I personally have since gone back to stock because I prefer the fitment ease. The R&D and Riva manifolds from what I have read both have a narrow carb base putting the carbs closer together. It makes fitment of the carbs a little bit of a chore.

I read somewhere the cross over works as a boost bottle. But unless you have your machine 100% dialed in for that days barometric pressure etc I doubt you would be able to tell the difference.

 

[WB800BLASTER]

the "wide" Riva ones I found to be the best. i modified a few of them to have the quick release plates. My opinion the newer style quick release type intakes they copied a lot of "wide" riva features. I have a used R&D and a few new wide Riva's.

 

[Pro-pulsion]

I read that about the boost bottle effect too but not the bit about how the barometric pressure would effect them. I have no troubles believing it though, my thoughts are that with the crossover you have a bit of a saving grace if one carb were to go lean. The shared intake tract would at least help to compensate enough to get you back without a blow up. I would think it has saved more people than we realize that are either without any technical experience or none at all. One of the guys in my group has a few Blasters, all but one are modded up. The one I was running while my ski was down has a Riva intake and dual oem 44's, I found the holeshot on that thing to be between somewhat spongy to ok at best. I know it's tuned reasonably well and synced, I did all the recent work to it but it's not as impressive as I thought it would be with all the mods it has. Could be because I am not used to it though after being on my SJ pretty well exclusively for the last 5 or 6 years.