Schrick 292 + Akra Evo

[Lienrocs]

Originally Posted by SYT_Shadow

I have a stroker S65, that's where the experience comes from

My street E92 may get 292s but never internal work

That's what I meant by replacing the bottom end; stroker. But it seems like you wouldn't do it again.

Can't wait to see more results with these cams. They could be the next thing. 👍

[Gossypiboma]

Cam install is an engine out job? Seems extreme, no?

[maicol76]

Originally Posted by SYT_Shadow

I would never allow someone to touch the insides of the engine. No one is replacing rods/cranks/pistons on my S65s.
But anyway, it's very different to pull an engine, remove the valve covers and do cams than to crack the block open. And one of the two solutions is not going to blow up later.

It may be possible to do the job while it's in the car but you'd be working in a very tight space.

We finished the job without pulling out the engine. With the right tools, it's simple enough. But it takes some time because the space of one cylinder inside banks 1 and 2 is narrow.
However, I chose the method not to pull the engine out because it takes a lot of time to remove and install the engine, supplement chemicals, adjust wheel alignment, and etc.
Except for the innermost cylinder of banks 1 and 2, it was not difficult. A $120 tool made in China was very useful. haha.

[statik]

Originally Posted by maicol76

We finished the job without pulling out the engine. With the right tools, it's simple enough. But it takes some time because the space of one cylinder inside banks 1 and 2 is narrow.
However, I chose the method not to pull the engine out because it takes a lot of time to remove and install the engine, supplement chemicals, adjust wheel alignment, and etc.
Except for the innermost cylinder of banks 1 and 2, it was not difficult. A $120 tool made in China was very useful. haha.

can you share what tool you used?

[maicol76]

Originally Posted by statik

can you share what tool you used?

https://magmatools.en.made-in-china....-MG50610-.html

https://www.amazon.com/UTOOL-Operate.../dp/B077QPCJWF

I used this tool.
These are same tool, may be. plz search and check. Searching keyword is 'valve spring replacement tool' that I used.

It is very simple job to install the spring key, but it is very tricky so takes long time.
Using a tool that easily removes the key can save you a lot of time. When mounting keys, do not use magnets. Put oil or grease on the key and then install it using tweezers may also reduce a lot of time. This is just my experience.

[maicol76]

Originally Posted by Redd

Wow. It makes a ton of power up top even without headers. Very interested to know if it loses any power below 3k.

How does the car sound with the 292s?

The engine sound was slightly louder, but the exhaust sound was noticeably louder. However, as you know, since it is not a supercharger tuning, the sound is still quite.

[statik]

thanks for sharing, assuming you used the springs and retainers that schrick recommends?

and you used an s65 specific timing tool?

Originally Posted by maicol76

https://magmatools.en.made-in-china....-MG50610-.html

https://www.amazon.com/UTOOL-Operate.../dp/B077QPCJWF

I used this tool.
These are same tool, may be. plz search and check. Searching keyword is 'valve spring replacement tool' that I used.

It is very simple job to install the spring key, but it is very tricky so takes long time.
Using a tool that easily removes the key can save you a lot of time. When mounting keys, do not use magnets. Put oil or grease on the key and then install it using tweezers may also reduce a lot of time. This is just my experience.

[Epoustouflant]

+50 whp w/292 over Akra evo & a mild tune as the green baseline

Am I getting this right?

If so, it is impressive, and seems to be better power / $ compared to a stroker.

[GORDON.M3]

Originally Posted by SYT_Shadow

It's nothing strange. OG already had similar results, although tuning is not complete IIRC.

I've been saying it for years already, 292 cams are the real deal. If you get the Schrick setup you don't need to limit vanos or do any other weird crap, it's plug and play.

With BW LT headers and Karbonius I'm sure we'll end up getting 420-430whp out of a 4.0L with 93 octane fuel

To put these numbers into context, my completely stock F80 CS gets 435whp. It's a great result for the S65


Looking at the curves: blue is stock, green is FBO Stage2 and red is 292 cams. Note that OP needs a better xpipe (Bimmerworld or ESS forward placed Xs) to have the torque curve stay constant until 6k rpm, but overall you see the important things: stock cams stop creating power after 7500rpm, 292s allow power to continue increasing.

People keep asking about raising the rev limit: you shouldn't go beyond 8500rpm if you have hydraulic lifters.

So Dan, are you saying I should get 292 Cams now? Where can I get them?

[Scharbag]

Some day, someeee daaaayyyyyy...

[Redd]

Originally Posted by Epoustouflant

+50 whp w/292 over Akra evo & a mild tune as the green baseline

Am I getting this right?

If so, it is impressive, and seems to be better power / $ compared to a stroker.

Epos, you know what to do!

[pbonsalb]

Originally Posted by Epoustouflant

+50 whp w/292 over Akra evo & a mild tune as the green baseline

Am I getting this right?

If so, it is impressive, and seems to be better power / $ compared to a stroker.

That is not clear to me. I am not sure there is a before and after. There is mention of other E9xM3 being included for reference purposes but we do not know whether those cars had any mods. More info would help. I am just happy someone tried them and did get on a dyno.

With all the mods like intake, pulley, catless xpipe and 292, I was hoping for 420 rwhp SAE on the Dynojet on 93 pump. The best examples of pump gas cars with stock cams so far are right around 400 rwhp SAE, but those are the best and most are closer to 390 so this would be a gain over those.

[statik]

yeah, while this looks promising its difficult to tell how much power these actually produce without an actual before and after. It seems highly unlikely that these are giving gains of +50whp over a tuned/catless setup. Regardless, I plan on finding out what headers and 292's will do on the 4.0 next spring along with a before/after on the same dyno.

Originally Posted by pbonsalb

That is not clear to me. I am not sure there is a before and after. There is mention of other E9xM3 being included for reference purposes but we do not know whether those cars had any mods. More info would help. I am just happy someone tried them and did get on a dyno.

With all the mods like intake, pulley, catless xpipe and 292, I was hoping for 420 rwhp SAE on the Dynojet on 93 pump. The best examples of pump gas cars with stock cams so far are right around 400 rwhp SAE, but those are the best and most are closer to 390 so this would be a gain over those.

[Epoustouflant]

Originally Posted by pbonsalb

That is not clear to me. I am not sure there is a before and after. There is mention of other E9xM3 being included for reference purposes but we do not know whether those cars had any mods. More info would help. I am just happy someone tried them and did get on a dyno.

With all the mods like intake, pulley, catless xpipe and 292, I was hoping for 420 rwhp SAE on the Dynojet on 93 pump. The best examples of pump gas cars with stock cams so far are right around 400 rwhp SAE, but those are the best and most are closer to 390 so this would be a gain over those.

He was getting 420 on an agressive tune with catted X pipe and air filter; no pulleys, headers or enlarged plenum.

Is the OP french? I speak French, maybe I could talk to him.

I have seen a few cars from EuropeBMshop get these: https://instagram.com/europebmshop?igshid=ofruo17vc19r

Originally Posted by Redd

Epos, you know what to do!

👀👀👀

I am eyeing a stroker build over the winter but I'm all for saving 25k and getting 400-420 wheel ~ that's 991.1 GT3RS territory.

[Redd]

Originally Posted by Epoustouflant

👀👀👀

I am eyeing a stroker build over the winter but I'm all for saving 25k and getting 400-420 wheel ~ that's 991.1 GT3RS territory.

Someone was saying something about bore wear issues with strokers. Cams would be much safer I think. But no reason you could do both if you wanted to. Just sayin'.

[SYT_Shadow]

Originally Posted by GORDON.M3

So Dan, are you saying I should get 292 Cams now? Where can I get them?

Yes. If I didn't already have the stroker 292s would be in my E92

I may do them anyway, we'll see

[Epoustouflant]

Originally Posted by Redd

Someone was saying something about bore wear issues with strokers. Cams would be much safer I think. But no reason you could do both if you wanted to. Just sayin'.

I've heard this on the 4.6 - it becomes supposedly sketchy with sleeving or boring the alusil block. The 4.4 kits are drop in pistons with stock alusil bore. I'm still at research stage with shops so take what I say as my 2 cents.

This is very interesting considering the 4.6 from RDsport put out 440whp on stock cams. Great news for the NA boys either way.

I'll work my network and see what I can do.

[SYT_Shadow]

Originally Posted by Epoustouflant

I've heard this on the 4.6 - it becomes supposedly sketchy with sleeving or boring the alusil block. The 4.4 kits are drop in pistons with stock alusil bore. I'm still at research stage with shops so take what I say as my 2 cents.

This is very interesting considering the 4.6 from RDsport put out 440whp on stock cams. Great news for the NA boys either way.

I'll work my network and see what I can do.

As you may find out if you build one, the least of your concerns is the 4.6 vs 4.4. It's assembly and aftermarket components. But perhaps it's better to discuss strokers in a different thread vs pollute Maicol's

[911r]

Originally Posted by Epoustouflant

+50 whp w/292 over Akra evo & a mild tune as the green baseline

Am I getting this right?

If so, it is impressive, and seems to be better power / $ compared to a stroker.

Carbahn managed 500whp out of a 4.0L w/ "race" cams (presumably 292s) and their dry sump kit. From my perspective it looks like you don't necessarily need to stroke your S65 to get over the 400whp mark. Could be 100% wrong though, I know nothing about engines.

[Scharbag]

Originally Posted by 911r

Carbahn managed 500whp out of a 4.0L w/ "race" cams (presumably 292s) and their dry sump kit. From my perspective it looks like you don't necessarily need to stroke your S65 to get over the 400whp mark. Could be 100% wrong though, I know nothing about engines.

Hmm,

This sounds fishy. Assume 500WHP. Also assume 15% driveline loss. This means the engine is producing 144HP/L.

The current NASCAR NA V8 engines produce ~128HP/L. This is with restrictors. Removing restrictors, NASCAR engines can tip the scales at 150HP/L. At 9000RPM. From a purpose built race engine. Which costs ~$100K. Each.

Perhaps with race gas it might happen. For a while.

[911r]

Originally Posted by Scharbag

Hmm,

This sounds fishy. Assume 500WHP. Also assume 15% driveline loss. This means the engine is producing 144HP/L.

The current NASCAR NA V8 engines produce ~128HP/L. This is with restrictors. Removing restrictors, NASCAR engines can tip the scales at 150HP/L. At 9000RPM. From a purpose built race engine. Which costs ~$100K. Each.

Perhaps with race gas it might happen. For a while.

Yeah, like I said I know nothing about engines haha. I was surprised to see that number though. They were running 100oct—and it could have been tested on an engine dyno.

[pbonsalb]

Probably 500 crank hp, which might be 430 rwhp.