Camshaft for 335 M30

[TheConverter]

Well i reckon i will go for shrick but will it be the 282 or 284, anyone got any experience with them that can recomend anything, cheers again guys...

[gcorky]

thick Ant is selling catcams,very reasonable pricing....send him p.m maybe

thats Ant,a-tech

[Andy335Touring]

We need some more info to help you......

What sort of power delivery are you after ?

What other mods are you planning ?

What is the main use of your car, road/track day/sunday blaster/etc ?

[Andyboy]

thick Ant is selling catcams

I thought Ant was reasonably bright.

[gcorky]

thick Ant is selling catcams

I thought Ant was reasonably bright.

oops....my n has gone awol...lolo

[TheConverter]

I am building to be a fast road car, after all it is a cabby!! i want to jazz up the HP on the engine as much as possible without going into turbos, hoping to get similar or better than the B6 3.5s @ about 260HP i think, i want to be sub 6.5s 0-60 with it...

[Kos]

I am building to be a fast road car, after all it is a cabby!! i want to jazz up the HP on the engine as much as possible without going into turbos, hoping to get similar or better than the B6 3.5s @ about 260HP i think, i want to be sub 6.5s 0-60 with it...

you'll need head work with a cam to get that power, as well as a re-map of the ecu,

[DRIFTBOY]

If you fit a higher lift camshaft I've heard it recommended to have the pistons pocketed, they are a very 'close' engine to begin with.
This could be what is causing a worrying rattle in my engine when it's warmed up! As yet un-proven though, still a mystery!

260BHP is quite a tall order, would need a 6-branch manifold (and other parts / work!) which are very rare / expensive for right hand drive cars.

6.5 seconds should be within reach though.

Good luck!

[TheConverter]

If you fit a higher lift camshaft I've heard it recommended to have the pistons pocketed, they are a very 'close' engine to begin with.
This could be what is causing a worrying rattle in my engine when it's warmed up! As yet un-proven though, still a mystery!

260BHP is quite a tall order, would need a 6-branch manifold (and other parts / work!) which are very rare / expensive for right hand drive cars.

6.5 seconds should be within reach though.

Good luck!

What cam do u use?i am looking at the 284 shrick, which is highest lift i believe, wasn't gonna do head work though, other than a rebuild with new valves lapped in and uprated springs and the cam, afterwards i reckon i'll re-direct the inlet of air to the passenger side and of course have a re-map , but no 6-branch and n M3 supersprint system for now, i have not heard of having pistons altered, anyone else heard this???

[DRIFTBOY]

I'm using the Schrick 284, as are a few people on here I think.

I'm not sure it's really worth changing just the camshaft without head work and chip / re-map. The gains aren't huge for the money it costs either!

Getting it up to tip top condition is the best way to start though.

[TheConverter]

what headwork would you recomend mate, and is £240 a good price for a new 284 shrick cam, thanks buddy, i am building engine myself anyway, i've built many many standards before......

[Ant]

M30 needs the comp lifted and a cam swop, proven old skool mods on an engine that is understressed in O.E spec.

Same is true of the M20, there is potential in there, but it can be expensive to get at.

Andy Law has the highest spec M30 swop iirc ?

[TheConverter]

M30 needs the comp lifted and a cam swop, proven old skool mods on an engine that is understressed in O.E spec.

Same is true of the M20, there is potential in there, but it can be expensive to get at.

Andy Law has the highest spec M30 swop iirc ?

so how can i raise the comp, by decking the block, or with pistons or what, or are you meaning put a turbo on it??

[DRIFTBOY]

what headwork would you recomend mate, and is £240 a good price for a new 284 shrick cam, thanks buddy, i am building engine myself anyway, i've built many many standards before......

I would have it skimmed the minimum amount to get it flat for a start.
Then I'd have someone who knows what they are doing work on the ports.
Inlet and exhaust manifolds can be matched to the ports in the head also.

£240 is very cheap for that camshaft, it's recommended to fit new springs and caps also though.

Ant - do you know how much power Andy Law got from the M30 out of interest ?

I need to arrange picking up Toby's old inlet from you too!
Pm about to be sent!

Martin.

[Ant]

best way to raise the CR, turbo

Custom pistons are the obvious choice, serious £Â£ though

pocketed std pistons with a head skim/decking session would yeild the desired result though need to mock it up a few times , machine, re mock and plastiguage/blu tack for clearances.

260HP is not gona be cheap whatever method you choose, Toby Unna has gone FI for relative pennies by going for the complete DIY method, cant fault it

Actually, I can, needs bigger injectors, then we can really scare ourselves

[Andy335Touring]

Ant - do you know how much power Andy Law got from the M30 out of interest ?

If i ever get around to fitting that twin TB and getting it remapped it i'll let you know.

[DRIFTBOY]

Ant - do you know how much power Andy Law got from the M30 out of interest ?

If i ever get around to fitting that twin TB and getting it remapped it i'll let you know.

Aah, I didn't know your surname, did wonder if he meant you!

Your's is the highest (proven) power of any n/a M30 conversion I've seen too! Nice one!

With your new parts on should we expect 260bhp + ? !

[Andy335Touring]

It's all guess work at the mo, i've got a figure in my head i'd like but sods law i won't get it

[DRIFTBOY]

Good luck Andy, I look forward to seeing the dyno sheet!

And for your info theconverter (I don't think it's been mentioned) Andy is also using Schrick 284 camshaft.

Martin.

[Andy335Touring]

And for your info theconverter (I don't think it's been mentioned) Andy is also using Schrick 284 camshaft.

Yeah, sorry, i forgot about the original subject

A cam with a duration around 270-285 should be a good ratio for a road car, may be nudging 290 but i'm not sure how far you can go and still pass an MOT(emissions) ?

If it was a trailer queen/track day only then a real lumpy beast around 300-310 would be cool(along with a buzzy 1500rpm tick over).

To re-iterate(sp?) a couple of points.......

Duration is only one indicator of how wild a cam is.

A cam will need a suitable chip to optimize the timing/fueling.

Chip and cam will get you around 230-240bhp and will pep it up nicely.

Chip/cam/head work roughly will be about 240-245bhp.

All tuning will damage your wallet !

[DRIFTBOY]

Just a thought Andy - have you considered or already have an adjustable camshaft pulley?

I think we spoke before about skimmed heads and camshafts putting the timing out potentially ?

I wonder how much power, if any could be gained from one!

[Andy335Touring]

If i remember right from an old Dave Walker artical you need to measure your valve to piston clearance to use one of those properly, too much adjustment = bent valves

In theory i'd like one to play with the torque/power balance slightly, but not at the mo.

May be the next time i take the head off.

[TheConverter]

So Basically, if i get the 284 cam with uprated valve springs and new caps, get the head skimmed flat, it will be mapped by my m8 on the r.road, also i'm moving the inlet to the n/s and have a supersprint m3 system going to the m30 standard manifold... i can hope for about 240 ??? or a bit less?? (p.s. thanx for the info guys, muchly appreciated

[gareth]

for higher compression, could an early M30 be used? or just parts of one and pats of a later one? i know there are issues with the water elbow on the back of the head causing clearance problems but could this be rearranged like the later ones maybe? or just hammer / cut / weld the bulkhead as it'll be a lot cheaper than any engine mods required for more compression

[handpaper]

On the emissions front, I took my '89 320 for an MoT on 6th February and the emissions weren't tested at all.
Seems they're no longer being done for pre-cat cars. So our only concern now is whether there's enough manifold vacuum at idle to run the brake servo!
Now let me see about that catcams 308/309......

[Andy335Touring]

for higher compression, could an early M30 be used? or just parts of one and pats of a later one? i know there are issues with the water elbow on the back of the head causing clearance problems but could this be rearranged like the later ones maybe? or just hammer / cut / weld the bulkhead as it'll be a lot cheaper than any engine mods required for more compression

Early bottom end with a newer head wouldn't bump the C/R up much because i think the combustion chambers are bigger and the squish areas might be different too which is a PITA to sort out

[alan335i]

where abouts can you buy a fast road cam for a m30? what make would you guys recommend?

[DRIFTBOY]

I think it's hard to say which is best, never heard anything bad about any of them.

I went with Schrick as I saw and heard it recommended on forums and from engineering / engine building companies.

Camshafts are expensive and on these engines don't give a huge gain for the money spent in my opinion, but if you are going to do other mods and spend a bit of £Â£Ã‚£ - head work, chip / management etc. then go for it!

I've also heard it said from more than one source that to run a high lift camshaft to get the pistons pocketed as they are a 'close' engine to begin with. And to fit new springs and retainers. New rockers and shafts are a good idea too if changing the camshaft.

I believe Sal in the Zone Shop can get Schrick parts.

Martin.

[Gunni]

The stocker in the latest M30 is hard to beat.
it makes a 3.5 give 220hp with only 8.8:1 compression
imagine what it does with higher compression

[handpaper]

The stocker in the latest M30 is hard to beat.
it makes a 3.5 give 220hp with only 8.8:1 compression
imagine what it does with higher compression

Very interesting comparison!
Particularly the Schrick/M30b35 at 0.050" lift as they're almost identical apart from a little extra lift on the Schrick and 284/280 would normally be considered a pretty hairy aftermarket cam.
Do you have similar info on the m20 cams?

[yamoda]

How glad am I that my M30 came out of a 1990 535 auto???

[Gunni]

The stocker in the latest M30 is hard to beat.
it makes a 3.5 give 220hp with only 8.8:1 compression
imagine what it does with higher compression

Very interesting comparison!
Particularly the Schrick/M30b35 at 0.050" lift as they're almost identical apart from a little extra lift on the Schrick and 284/280 would normally be considered a pretty hairy aftermarket cam.
Do you have similar info on the m20 cams?

No sorry