HIGHBOOSTINGM3 - ELGIN CAM REGRIND - I finally found the spec sheet - Discuss

[highboostingm3]

HIGHBOOSTINGM3 - ELGIN CAM REGRIND - I finally found the spec sheet - Discuss

I was doing some cleaning up and found the spec sheet.

Check the "NEW" (regrind) numbers compared to the "STD" (standard-stock) numbers.

Anyone with excellent cam knowledge please give me your opinions. I am very curious.

Also...if anyone has these numbers for Schrick, VAC Turbo, ICS and other cams please share and compare as well.

[being3]

This must be e36 M3 grind as its for hydraulic lifters. Good info none the less ... Thanks for sharing

[highboostingm3]

This must be e36 M3 grind as its for hydraulic lifters. Good info none the less ... Thanks for sharing

Yes it is a built US Spec m52 head/block with 85mm pistons and 89.6mm s52 crank for 3.05L Displacement.

[das Boot]

I've been playing a lot with cams recently , I have The new vac 276 intake and 270 exhaust cams.
Ive rolled them to 232 @50 intake and 224@50 exhaust.

- - - Updated - - -

If anyone has cams with no spec sheet and wondering exactly what they are you can ship em to me and I can roll em , i have a dummy motor set up and all the tools required , once you know your cams specs especially the centerline you can degree em to your hearts desire.

[chikinhed]

Those are the same specs that my Elgins were. I can post my collection of cam specs again if you'd like. LMK.

Sent from my GTX3582R

[highboostingm3]

I've been playing a lot with cams recently , I have The new vac 276 intake and 270 exhaust cams.
Ive rolled them to 232 @50 intake and 224@50 exhaust.

- - - Updated - - -

If anyone has cams with no spec sheet and wondering exactly what they are you can ship em to me and I can roll em , i have a dummy motor set up and all the tools required , once you know your cams specs especially the centerline you can degree em to your hearts desire.

Good info thanks.

So...what do you mean going from vac 276 intake and 270 exhaust to 232 @50 intake and 224@50 exhaust? Is that good? Bad? Why?

Cam explanation for dummies please.

Those are the same specs that my Elgins were. I can post my collection of cam specs again if you'd like. LMK.

Sent from my GTX3582R

Thanks. Didn't you figure out the perfect cam degree for turbo app or...? Could you post about that?

Glad to know they are exactly the same so any knowledge you have on the degree to create quicker spooling, etc. I can use.

Anything good or bad about these specs? Can you explain each spec in more layman's terms?

[das Boot]

Good info thanks.

So...what do you mean going from vac 276 intake and 270 exhaust to 232 @50 intake and 224@50 exhaust? Is that good? Bad? Why?

Cam explanation for dummies please.

Thanks. Didn't you figure out the perfect cam degree for turbo app or...? Could you post about that?

Glad to know they are exactly the same so any knowledge you have on the degree to create quicker spooling, etc. I can use.

Anything good or bad about these specs? Can you explain each spec in more layman's terms?

The cams have alot of lift but are a little late opening if timed with factory blocks so adjustments were made to both .
The most common way to spec camshafts is by measuring them at .50 lift
They were advertised as 276/270 and measured at .004
I assume. I measured them at .50 lift cause its more common and easier to adjust from there.

From all my conversations with Paul burke it's all about where the 276/270 is opening and closing you could have the most beautifull cam specs ever but if they are opening and closing like crap the them They are crap.
that is why it's so important to know what you got.
By no means am i a cam guru but I do know exactly what cams I have and know exactly when they open and close

[m3mods]

Somebody send this man some vac mild grinds and or ics mild grinds! If no one knows anything about the vac mild grind cams by the time I get some I'll send them your way before install as I'd love to know a bit about them before install. Also curious for those of you with the vac mild grind cams/ ics mild grinds already, did you just install them with factory timing blocks or have any of you degreed them and seen benefits?

[crazyyardie]

Yes it is a built US Spec m52 head/block with 85mm pistons and 89.6mm s52 crank for 3.05L Displacement.

I was under the impression that I cant use the s52 crank with the m52 pistons. Are ur pistons custom spec too.

I have the s52 crank and eagle rods just trying to figure out the pistons

[pbonsalb]

Since the S52 crank has a longer throw than the M52 crank, and the rods are the same length for either crank, the pin height in the piston has to be changed or it will stick up too far into the combustion chamber. So if an M52 bore piston is used, it has to be custom with a relocated pin height rather than a stock one. Wiseco makes M52 bore pistons for use with S52 cranks and you should be able to buy them through TRM or Maximum Psi. Any piston maker can make them if you provide the specs or it already has the specs. To reduce the risk of a screw up, it may be best to work with a shop that knows what you need.

[crazyyardie]

ok will contact maxpsi and see what they say.

thanks

[highboostingm3]

I was under the impression that I cant use the s52 crank with the m52 pistons. Are ur pistons custom spec too.

I have the s52 crank and eagle rods just trying to figure out the pistons

Pistons are CP 8.5:1CR custom spec yes. Rods are Pauter.

- - - Updated - - -

The cams have alot of lift but are a little late opening if timed with factory blocks so adjustments were made to both .
The most common way to spec camshafts is by measuring them at .50 lift
They were advertised as 276/270 and measured at .004
I assume. I measured them at .50 lift cause its more common and easier to adjust from there.

From all my conversations with Paul burke it's all about where the 276/270 is opening and closing you could have the most beautifull cam specs ever but if they are opening and closing like crap the them They are crap.
that is why it's so important to know what you got.
By no means am i a cam guru but I do know exactly what cams I have and know exactly when they open and close

Thank you for that great explanantion. Paul Burke is the master. He was working on making his cams available per his website so one could just order them...has he achieved that yet?

I wonder how well my regrinds open and close. Would love to know.

Somebody send this man some vac mild grinds and or ics mild grinds! If no one knows anything about the vac mild grind cams by the time I get some I'll send them your way before install as I'd love to know a bit about them before install. Also curious for those of you with the vac mild grind cams/ ics mild grinds already, did you just install them with factory timing blocks or have any of you degreed them and seen benefits?

I agree. It would be great for das boost to give us info on the opening/closing of those cams along with Schrick, Paul Burke, Elgin Regrinds, etc.. One thread with all the comparisons that we have for our motors would be sick. Not enough profit with our cars for someone like MaxPSI or CES or Paul Burke to do this comparison test probably though.

Since the S52 crank has a longer throw than the M52 crank, and the rods are the same length for either crank, the pin height in the piston has to be changed or it will stick up too far into the combustion chamber. So if an M52 bore piston is used, it has to be custom with a relocated pin height rather than a stock one. Wiseco makes M52 bore pistons for use with S52 cranks and you should be able to buy them through TRM or Maximum Psi. Any piston maker can make them if you provide the specs or it already has the specs. To reduce the risk of a screw up, it may be best to work with a shop that knows what you need.

Nice explanation thanks.

[wazzu70]

Those are the same specs that my Elgins were. I can post my collection of cam specs again if you'd like. LMK.

Sent from my GTX3582R

Brad, do you have the durations @ .004"? What install centers did you end up using?

What are the factory install centers (vanos off)?


Cam, what is your current manifold/turbo setup?

[Apex24]

Anyone have info/specs on the bimmerheads S52 regrinds? I was told they are to mimic sunbelt stage 2's but I'm having trouble finding the specs on those as well.

[highboostingm3]

...
Cam, what is your current manifold/turbo setup?

Spa t4 mani
pt6766 dbb

...not yet tested.

[iRodD]

Hurry

[GG///M3]

Bimmerworld.com has the specs on the sunbelt stage 2's. I have the bimmerhead specs somewhere as well. They are not exactly the same as the sunbelts , but close. I'll be throwing a set of those 276/270 schricks in my car. If ur not going to use a vano's limiter you'll need to retard the intake cam 4.5 degrees unless you have aftermarket Pistons with larger valve relieves .

Hi 5

[BadBoostedBmwM3]

Bimmerworld.com has the specs on the sunbelt stage 2's. I have the bimmerhead specs somewhere as well. They are not exactly the same as the sunbelts , but close. I'll be throwing a set of those 276/270 schricks in my car. If ur not going to use a vano's limiter you'll need to retard the intake cam 4.5 degrees unless you have aftermarket Pistons with larger valve relieves . Hi 5

Get some evosports.

[chikinhed]

Stock S52 cams set to stock setting:

IN 255* @ 0.004" 214* @ 0.050"
EX 237* @ 0.004" 200* @ 0.050"
LSA 116.5*
IN CL 120* ATDC
EX CL 113* BTDC

Elgin cams set to stock settings:

IN 228* @ 0.050"
EX 206* @ 0.050"
LSA 117*
IN CL 121* ATDC
EX CL 113* BTDC

A little birdie told me to set my Elgins to this:

IN 228* @ 0.050"
EX 206* @ 0.050"
LSA 113*
IN CL 118* ATDC
EX CL 108* BTDC

This timing setting was what I had when I dyno'd 620 whp / 560 wtq:

IN 228* @ 0.050"
EX 206* @ 0.050"
LSA 119.75*
IN CL 125* ATDC
EX CL 114.5* BTDC

I have more info…….

[highboostingm3]

Stock S52 cams set to stock setting:

IN 255* @ 0.004" 214* @ 0.050"
EX 237* @ 0.004" 200* @ 0.050"
LSA 116.5*
IN CL 120* ATDC
EX CL 113* BTDC

Elgin cams set to stock settings:

IN 228* @ 0.050"
EX 206* @ 0.050"
LSA 117*
IN CL 121* ATDC
EX CL 113* BTDC

A little birdie told me to set my Elgins to this:

IN 228* @ 0.050"
EX 206* @ 0.050"
LSA 113*
IN CL 118* ATDC
EX CL 108* BTDC

This timing setting was what I had when I dyno'd 620 whp / 560 wtq:

IN 228* @ 0.050"
EX 206* @ 0.050"
LSA 119.75*
IN CL 125* ATDC
EX CL 114.5* BTDC

I have more info…….

Stealing! Thank you Master Yoda!

[GG///M3]

Get some evosports.

Couldn't get them on the phone. Plus I already have the cams I mentioned .

[BadBoostedBmwM3]

Couldn't get them on the phone. Plus I already have the cams I mentioned .

Hmm, it seems as if they aren't in the game.

One forum member made some real good power with them.

[chikinhed]

Riot racing cams are probably the most affordable cam upgrade.

Sent from my GTX3582R

[Butters Stoch]

How are the riot racing cams ? Anyone try ?

[GG///M3]

How are the riot racing cams ? Anyone try ?

Not sure, but they sell BBTB's for a decent price.