Who's interested in cams?

[Krono]

Just wanted to let you guys know that I am working with delta cam to do some magic on the BP26 cams.

My idea for the grind is to keep the original characteristics of the BP26 cams; just increase the lift. By how much, i'm not sure. Delta wanted to wait till he recieved the cams before we talked about the grind. Input on this would be appreciated.

For those that don't know, this type of grinding lowers the radius of the base circle in order to achieve higher lift and duration. Because of this, you would no longer be able to use HLA's. A conversion to solid lifters is necessary.

This will be an always available grind. No group buy or anything necassary.

BP05 regrinds will come later.

Also, if someone has a set of BP26 cams lying around that they would want to offer up, that would make this process quicker. I'm working on buying a set but I'd like to get before and after dyno numbers. I'm going to the dyno on june 18th and I think its possible to get this done by then.

[mx-3_4evr]

That would be awesome! Too bad I don't have extra turbo cams.

[Krono]

I was just looking at the NA and Turbo cam specs. The NA intake cam is identical to the Turbo cam, its just advanced 3*. The NA exhaust cam is nearly identical.

If Delta can machine a new hole in the end of the cams for the pin, we could get the valve overlap down to 13* using the NA cams. Its 10* on the turbo cams.

The hole would have to be 3* advanced on the intake and 3* reterded on the exhaust.

That would be sweet if this is possible. NA cams are a dime a dozen.

Or, people could just run adjustable cam gears. Drilling the hole would probably be cheaper and easier though.

[jay]

Duration and overlap are different though as well. Not by much, but enough to justify taking the n/a cams outta the rallycar and installing the bp26's...

[Krono]

Duration and overlap are different though as well. Not by much, but enough to justify taking the n/a cams outta the rallycar and installing the bp26's...

Right, the BP26 cams have 10* of overlap and the NA cams have 19*. If we could mod the NA cams and get 13* of overlap, I think that would be a good alternative to bp26 cams that are getting harder and harder to find.

The reason it would be hard to get the NA cams down to 10* of overlap is because the NA exhaust cam has 250* of duration compared to 247* on the BP26 cams.


I'm going to contact a couple other compaqnies and see who is going to be the best to work with on this.

Anyone ever heard of COLT Cams?

[Krono]

I just got off the phone with ElginCams. Dude was freakin awesome!! Very knowledgable and seemed eager to work with me. It turns out that he has alot of experience grinding cams for the miata. Actually, the dude that used to own Integral, worked for him for 17 years.

I'm going to send out a set of NA cams to him and he is going to check them out and get back to me. I also gave him the BP26 cam specs and he agreed that with using Adj. cam gears and working the lobes, we could have a cam with a similiar amount of valve overlap and more lift than than the bp26 cams.

He also said he is very willing to come up with multiple grinds for different setups.

[jay]

I might be very interested in higher lift cams...dunno if I wanna deal with solid lifters though. Might be OK for the rallycar.

[Krono]

I might be very interested in higher lift cams...dunno if I wanna deal with solid lifters though. Might be OK for the rallycar.

I didn't want to either, but once I did a little research, I changed my mind. The miata guys say that as long as they are set right, they never have any problems and are actually quieter than most HLA's.

[jay]

Gotta add that expense into the mix though. I *think* they just drop right in at least, right?

[Krono]

Gotta add that expense into the mix though. I *think* they just drop right in at least, right?

You have to shim them to get the lash right. But besides that, they drop in. Miata roadster sells the "shim under bucket" solid lifters for $200. You could probably get the stock 99 and up lifters for next to nothing. They suck for high rpms though.

[KAinjection]

what about getting some cams that were like the EHX/INT cam mod without having to source 2 intake cams especially BP26 ones. Can they mod the BP05 to be a turbo grind?

Edit: I was the guy that posted without reading the thread entirely

[Krono]

I just got off the phone with ElginCams. Dude was freakin awesome!! Very knowledgable and seemed eager to work with me. It turns out that he has alot of experience grinding cams for the miata. Actually, the dude that used to own Integral, worked for him for 17 years.

I'm going to send out a set of NA cams to him and he is going to check them out and get back to me. I also gave him the BP26 cam specs and he agreed that with using Adj. cam gears and working the lobes, we could have a cam with a similiar amount of valve overlap and more lift than than the bp26 cams.

He also said he is very willing to come up with multiple grinds for different setups.

[deadly_sleeper]

So, unlike other cam regrinds that allow you have to keep the hla's these would for sure need the solid lifters? I have a set of BP26 cams I would be willing to send in. How long would they need them for?

[Krono]

So, unlike other cam regrinds that allow you have to keep the hla's these would for sure need the solid lifters? I have a set of BP26 cams I would be willing to send in. How long would they need them for?

Yes, you would def need solid lifters. You can't grind much at all and still use the hla's.

I'm going to send him some NA cams and he is going to let me know what he can come up. So lets hold off on the BP26 cams for the moment.

[KaleoXtreme]

I'm definitely interested in aggressive turbo cams. However, the net gains would have to be significantly more than the turbo exh/intake mod for it to be worthwhile IMO. Especially if you add the cost of solid lifters to the price. Can someone explain the pros and cons of solid lifters? I was under the impression that solid lifters were better for high RPMs.