MyE28.com

Did a search but didn't see. Anybody know where this is?

Thanks,
RussC

Russ,

Here's the latest one with the Schrick cam I borrowed from John at the last wrenchfest.

Devinder

14 Feb 2008 -- edit this chart to include the Metric Mechanic Sport Cam and a PDF of the chart and table for printing.

http://www.devinder.com/misc/M30camshafts.pdf

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Any chance somebody could translate that to text for those who have trouble distinguishing colors?
Thanks,
Todd

Thanks Devinder. Saved on my system.

RussC

and being bored theres worse things to do...
schrick- 11.1mm ~110btdc 11.4mm ~115atdc
b35 10.3mm~110btdc 10.4mm ~112atdc
b34 10.1mm ~110btdc 10.1mm ~115atdc
b32 9.9mm ~110btdc 9.7mm ~112atdc
hartge 292(carb/LJet) 9.8mm ~110btdc 9.6mm ~105atdc
b30 ljet ~9.35mm ~110btdc 9.3mm ~111atdc
b30 e9 ~9.25mm ~110btdc 9.3mm ~111atdc

i think i got it pretty close, the degrees were tough

Let me see what I can do. I have gone through the data and made a table of the 4 events (EO, EC, IO, IC) for several lift levels (BMW lift, SAE lift, and advertised). I need to calculate the traditional values.

OK, I think I got all the relevant numbers from the data. The 0.40 mm lift is the SAE J604 standard lift and it seems to correlate fairly well with BMW specifications for duration. The 0.050 inch lift numbers are for comparision with American V8 cams.

Note that the aftermarket cams are all advertised with durations measured on the clearance ramps. This is true for S38 cams too. The same trick is used by all famous American cam makers.

The large differences in intake/exhaust peak lift are real. There is considerable variation in grinding on the same cam.

Thanks Devinder.

Devinder wrote:Russ,

Here's the latest one with the Schrick cam I borrowed from John at the last wrenchfest.

Devinder

Is it possible to get a copy of your Excel file?

/Bert-Ola

Kinda REALLY pisses me off we have this information now. I asked and asked and asked about keeping my Schrick 284 cam for the turbo engine. Several people said NOOOOOOOOOOOooooooo, it will not work with the FI engine, too much blow thru. Now I find out it is the PERFECT cam for the FI motor because it actually is a 274 duration cam. This really sucks.

I also asked on other boards and they agreed that a 284 was too much cam, they also did not know what we do now. All of te research I did into FI and cams pointed to a 284 being to much duration.

So, is it possible to change the cam with the head still installed?

Duke M535ti wrote: So, is it possible to change the cam with the head still installed?

Maybe with the radiator, fans and grills out of the way. The center of the cam is the same as the center of your distributor cover plate... eyeball it.

So, is it possible to change the cam with the head still installed?

sure, you can do this with the head installed -- just take the whole engine out.

Seriously, the top of the radiator core support is in the way even if you get the rad and condenser out.

Is it possible to get a copy of your Excel file?

Bert-Ola,

Which data do you need? Do you want the numbers I posted above or the underlying data for the lift curves? Send me an email message (you can use the www link and send me a message through my work web site)

Devinder

Duke M535ti wrote:Kinda REALLY pisses me off we have this information now. I asked and asked and asked about keeping my Schrick 284 cam for the turbo engine. Several people said NOOOOOOOOOOOooooooo, it will not work with the FI engine, too much blow thru. Now I find out it is the PERFECT cam for the FI motor because it actually is a 274 duration cam. This really sucks.

I also asked on other boards and they agreed that a 284 was too much cam, they also did not know what we do now. All of te research I did into FI and cams pointed to a 284 being to much duration.

So, is it possible to change the cam with the head still installed?

Sorry,
I actually told you to use it, but I guess you changed your mind from all the other input. If you remember, I tried to buy it from you, but you had already sold it!

There is a factory tool for just this R&R. But the engine has to be lifted enough to clear the radiator support and slide the cam out. There was a picture of the rocker depresser tool posted somewhere on this board.

RussC

RussC

I'd suggest using the b34 due to the low degree overlap. This is the reason people say not to use a high duration cam. More duration usually = more overlap.

Duke M535ti wrote:Kinda REALLY pisses me off we have this information now. I asked and asked and asked about keeping my Schrick 284 cam for the turbo engine. Several people said NOOOOOOOOOOOooooooo, it will not work with the FI engine, too much blow thru. Now I find out it is the PERFECT cam for the FI motor because it actually is a 274 duration cam. This really sucks.

I also asked on other boards and they agreed that a 284 was too much cam, they also did not know what we do now. All of te research I did into FI and cams pointed to a 284 being to much duration.

So, is it possible to change the cam with the head still installed?

altus22 wrote:I'd suggest using the b34 due to the low degree overlap. This is the reason people say not to use a high duration cam. More duration usually = more overlap.

That what we are talking about. The Schrick 284 does not have much more duration/overlap than the B34. It has over 1mm more of lift.

altus22 wrote:I'd suggest using the b34 due to the low degree overlap. This is the reason people say not to use a high duration cam. More duration usually = more overlap.

Duke M535ti wrote:Kinda REALLY pisses me off we have this information now. I asked and asked and asked about keeping my Schrick 284 cam for the turbo engine. Several people said NOOOOOOOOOOOooooooo, it will not work with the FI engine, too much blow thru. Now I find out it is the PERFECT cam for the FI motor because it actually is a 274 duration cam. This really sucks.

I also asked on other boards and they agreed that a 284 was too much cam, they also did not know what we do now. All of te research I did into FI and cams pointed to a 284 being to much duration.

So, is it possible to change the cam with the head still installed?

Right, did you look at the cam chart?

RussC

I see that it has a higher lift, but what about the 10 extra degrees of overlap? I'd like to see if the benefits of the lift outweigh the extra overlap.

Duke M535ti wrote:

altus22 wrote:I'd suggest using the b34 due to the low degree overlap. This is the reason people say not to use a high duration cam. More duration usually = more overlap.

That what we are talking about. The Schrick 284 does not have much more duration/overlap than the B34. It has over 1mm more of lift.

altus22 wrote:I see that it has a higher lift, but what about the 10 extra degrees of overlap? I'd like to see if the benefits of the lift outweigh the extra overlap.

What!
Where did you get 10deg of overlap? the chart gives ~ no more than 2deg from different lifts????

RussC

i suggest that you use a real turbo camshaft with more lobe separation and 284 degrees duration and higher lift and use 3mm lift at TDC then you will have a engine thats runs smooth at the bottom and have a real punch from 3200-7000

works fine

raceaddic wrote:i suggest that you use a real turbo camshaft with more lobe separation and 284 degrees duration and higher lift and use 3mm lift at TDC then you will have a engine thats runs smooth at the bottom and have a real punch from 3200-7000

works fine

How abt a dyno sheet for your current setup?

Todd

have non we never printed one because we was not done with the tuning we had 30psi+ as goal unfortunately did i brake 2 rocker arms and now am i waiting for billet ones

my camshaft had over 290 degrees in and 300 out and 12.2mm lift i had max Nm at 5500rmp and max power at 7200

but my movie speaks for itself when it comes to power

the recommendation i gave is one that we use on 500hp engines for people that like track days and drive ability more then street/dragrace

raceaddic wrote:have non we never printed one because we was not done with the tuning we had 30psi+ as goal unfortunately did i brake 2 rocker arms and now am i waiting for billet ones

my camshaft had over 290 degrees in and 300 out and 12.2mm lift i had max Nm at 5500rmp and max power at 7200

but my movie speaks for itself when it comes to power

the recommendation i gave is one that we use on 500hp engines for people that like track days and drive ability more then street/dragrace

I was not questioning the validity of your power output just wanted to see the graph.

BTW, it doesn't take 600rwhp to spin the tires in an e30.

ok sorry

to spin the tires M/T Et dragradials 235/60/15 in 200km/h+ in 5th gear with 3:45 i does

BTW dont try to do 280km/h+ in an E30 its not made for it

raceaddic wrote:ok sorry

to spin the tires M/T Et dragradials 235/60/15 in 200km/h+ in 5th gear with 3:45 i does

BTW dont try to do 280km/h+ in an E30 its not made for it

Not if it's 0F. I have spun summer tires at 140km/h with 300rwhp in 4th gear.

Drag radials are useless cold. Point it that spinning the tires is great for videos but doesn't prove much.

1/4 mile time slip?

Todd

So anybody running a b35 cam in f1 with good results?

Jimbeaux

T_C_D wrote: 1/4 mile time slip?

Todd

no got no time slip for this car it was just a street race car and a god one as well

http://www.coffe.dk/gallery/cars06/0609 ... _0240.html

but now back to the cam shafts

yes we have built several 400-450hp B35 engine with standard cam but i suggest that you use a cam with more duration and less overlap then would 500hp@18psi be easy with just a MLS and ARP

Devinder wrote:Bert-Ola,
Which data do you need? Do you want the numbers I posted above or the underlying data for the lift curves? Send me an email message (you can use the www link and send me a message through my work web site)

Devinder, you got mail.
/Bert-Ola

Bert-Ola,

I sent you the data a few days ago (to your telia.com addresss). It might be in junk mail. If you cant find it, let me know here and I'll resend it from another account.

Devinder

Jimmie G wrote:So anybody running a b35 cam in f1 with good results?

Jimbeaux

I am...B35 top end with B34 bottom. ~7.5:1 compression.

Pulls very well when it comes on cam...

OK Devinder,
it must got lost over the Atlantic and never reached my mailbox.

Can you give it another try (bertola at telia.com)

Thank you
/Bert-Ola

P.S. Do you have any links to pictures of VW Rack and Pinion conversion for E28. Saw this on an earlier thread here on the board, but can't find them. D.S.