Schrick Cams Monday

[shakywarrior]

Originally Posted by IMG

What happened to the current one ?

Rod knock. Large copper derbies in oil filter.

[IMG]

Originally Posted by shakywarrior

Rod knock. Large copper derbies in oil filter.

☹️ ugh

[shakywarrior]

Has anyone looked into Valve Springs Upgrade as well??

Seeing as how I will be needing a new motor and plan to do 292/292 Schrick Cams; I feel this could be an "Already In There" upgrade if someone decides to do Cams.

I dont know much about engine building details but from my understanding; If Cams shift the peak power to the right, you'd want higher revs. So higher revs means you'd need an upgraded Valve Springs correct??

9k rpm "reliably" ???

[SYT_Shadow]

Originally Posted by shakywarrior

Has anyone looked into Valve Springs Upgrade as well??

Seeing as how I will be needing a new motor and plan to do 292/292 Schrick Cams; I feel this could be an "Already In There" upgrade if someone decides to do Cams.

I dont know much about engine building details but from my understanding; If Cams shift the peak power to the right, you'd want higher revs. So higher revs means you'd need an upgraded Valve Springs correct??

9k rpm "reliably" ???

292 schrick cams can only be installed with their corresponding springs and titanium retainers

when I had 284s I got upgraded BE springs for them, however, the 292s require a different setup


If you keep the 4.0L displacement and get 292s then I'm sure you can gain a lot of power. I would not open up the engine to 'upgrade' anything other than rod bearings in this scenario.

[shakywarrior]

Originally Posted by SYT_Shadow

292 schrick cams can only be installed with their corresponding springs and titanium retainers

when I had 284s I got upgraded BE springs for them, however, the 292s require a different setup


If you keep the 4.0L displacement and get 292s then I'm sure you can gain a lot of power. I would not open up the engine to 'upgrade' anything other than rod bearings in this scenario.

Just read a post from Malek back in 2016 saying 9k rpms wont ever be reliable without bottom end rotating assembly build...... bummer. You actually posted in that thread as well.

[SYT_Shadow]

Originally Posted by shakywarrior

Just read a post from Malek back in 2016 saying 9k rpms wont ever be reliable without bottom end rotating assembly build...... bummer. You actually posted in that thread as well.

292s aren't big enough to require 9k rpms out of a 4.0L engine to max power out. At 8600 you're probably there

Here's some advice for you and anyone else reading the thread, coming from someone who has a money-no-object stroker engine: do not ever allow someone to open up your engine to 'upgrade' anything, other than rod bearings.

[shakywarrior]

Originally Posted by SYT_Shadow

292s aren't big enough to require 9k rpms out of a 4.0L engine to max power out. At 8600 you're probably there

Here's some advice for you and anyone else reading the thread, coming from someone who has a money-no-object stroker engine: do not ever allow someone to open up your engine to 'upgrade' anything, other than rod bearings.

Are you saying not to do cams since 292 require corresponding valve train components?

[SYT_Shadow]

Originally Posted by shakywarrior

Are you saying not to do cams since 292 require corresponding valve train components?

Cams just touch the top end, so they're kind of like rod bearings.

I'm pretty sure the 292s would gain good power on a 4.0L engine with stock internals. I'm itching to try it myself

[shakywarrior]

Originally Posted by SYT_Shadow

Cams just touch the top end, so they're kind of like rod bearings.

I'm pretty sure the 292s would gain good power on a 4.0L engine with stock internals. I'm itching to try it myself

Understood. Cant wait. Is there any authentic idle lope similar to the LS motor with cams???

[SYT_Shadow]

Originally Posted by shakywarrior

Understood. Cant wait. Is there any authentic idle lope similar to the LS motor with cams???

it's so upset at idle that sometimes it stalls. I use a 1k idle


The sound of the stroker with the headers, really loud exhaust, cams and the Karbonius airbox is completely insane

[shakywarrior]

Originally Posted by SYT_Shadow

Cams just touch the top end, so they're kind of like rod bearings.

I'm pretty sure the 292s would gain good power on a 4.0L engine with stock internals. I'm itching to try it myself

Originally Posted by SYT_Shadow

it's so upset at idle that sometimes it stalls. I use a 1k idle


The sound of the stroker with the headers, really loud exhaust, cams and the Karbonius airbox is completely insane

I need a listen!!! Any links??

[Jive]

Originally Posted by SYT_Shadow

Cams just touch the top end, so they're kind of like rod bearings.

I'm pretty sure the 292s would gain good power on a 4.0L engine with stock internals. I'm itching to try it myself

Can the stock internals handle the sustained increased revs that cams would bring reliably for an extended period of time?

[pbonsalb]

If a 4.4L is struggling to idle at nearly twice stock idle speed with 292s, wouldn’t they be a poor choice for a 4.0L?

[SYT_Shadow]

Originally Posted by shakywarrior

I need a listen!!! Any links??

In the stroker thread there's a vid of it at the track

Here it is:
The sound in the video is exhaust-biased as the mike is back there. It doesn't capture how much wonderful intake sound you hear.
I have Karbonius on my E92 as well as it also sounds wonderful, however the stroker sounds much better and a big portion of that is the cams

[SYT_Shadow]

Originally Posted by Jive

Can the stock internals handle the sustained increased revs that cams would bring reliably for an extended period of time?

People run 8600rpm on the stock engine all the time without issues

[SYT_Shadow]

Originally Posted by pbonsalb

If a 4.4L is struggling to idle at nearly twice stock idle speed with 292s, wouldn’t they be a poor choice for a 4.0L?

At stock idle they struggle. It dying is pretty rare, but it does eventually happen.

At 1000rpm it's perfectly stable

And 284s don't do much for this engine. You need bigger ones!

[shakywarrior]

Originally Posted by SYT_Shadow

At stock idle they struggle. It dying is pretty rare, but it does eventually happen.

At 1000rpm it's perfectly stable

And 284s don't do much for this engine. You need bigger ones!

Gintani is my tuning company of choice and they actually have a Idle Lope tune (Chop Tune) which would be pretty cool with cams. Im sure with proper tuning it'll run fine.

Plus we are past the realm of stock tune and parts. We cant really expect it to run just like stock. So Im sure the idling "issue" wont be a problem for anyone willing to do this.

[Richbot]

A 1000rpm idle would be fine with me. Stalling wouldn't, poor step-off or poor sub-3000-rpm power delivery wouldn't.

It has to be able to still be a tractable, stop-and-go traffic daily-capable engine for me to be interested. I don't have the DCT to cover up the engine's recalcitrance if it doesn't want to be a normal car engine when its' time to normal car things

I think that's where the 4.4 would come in to give bit more oomph and help it along where it might nto be happy with wider throttle openings at low rpm - that's where I drive half the time - below 3k - and I'd rather have the drivability than the bananas 7k-redline. Appreciate the continued input on how this is going and how the car behaves. Would love to haer your impressions on how your setup behaves in everyday situations like that.

And that video never, ever gets old.

[Richbot]

Originally Posted by SYT_Shadow

284s? I have 292s!!

(prior to the stroker I did have 284s)

lol I posted that a year ago

[Bartledoo]

Originally Posted by Richbot

...It has to be able to still be a tractable, stop-and-go traffic daily-capable engine for me to be interested. I don't have the DCT to cover up the engine's recalcitrance if it doesn't want to be a normal car engine when its' time to normal car things...

Whoa there. Someone needs to calm down with the big words. The only thing that should be big in this thread is cam duration.

[SYT_Shadow]

Originally Posted by Richbot

A 1000rpm idle would be fine with me. Stalling wouldn't, poor step-off or poor sub-3000-rpm power delivery wouldn't.

It has to be able to still be a tractable, stop-and-go traffic daily-capable engine for me to be interested. I don't have the DCT to cover up the engine's recalcitrance if it doesn't want to be a normal car engine when its' time to normal car things

I think that's where the 4.4 would come in to give bit more oomph and help it along where it might nto be happy with wider throttle openings at low rpm - that's where I drive half the time - below 3k - and I'd rather have the drivability than the bananas 7k-redline. Appreciate the continued input on how this is going and how the car behaves. Would love to haer your impressions on how your setup behaves in everyday situations like that.

And that video never, ever gets old.

off idle it behaves great. I manually shift the DCT in the E90 so it's not like it kicks down to mask behavior.

Daily driving it only makes me think it needs even larger cams, because the 292s are not large enough to detect a single driveability issue.
The engine pulls like hell whenever I go WOT. The snappy throttle response is shocking after getting used to the M3 CS.

When I go to work I usually drive under 3k rpm as well and the engine feels as wonderful as a regular S65, just more powerful.

I'm still convinced the best NA mod would be 292 cams

[Richbot]

Excellent. Thank you/f you for the enablement