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UweM3 
Moderator Group
Joined: 11-February-2003
Location: United Kingdom
Status: Offline
Points: 5445
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 Posted: 24-March-2004 at 17:20 |
Jonners, no new conrods needed  This is what all this specialist's don't want you to know. Also I don't know how our brother's over the pond coming up with 5 digit figures to do a 2.5 conversion. Of course if you buy everything new from all those specialists then a nice sum will leave your bank account.
here are the facts:
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E61 520d, slow and buzzy but my wallet likes the mpg.....
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amorgan
Really Senior Member I
Joined: 08-December-2003
Location: united kingdom
Status: Offline
Points: 288
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Posted: 24-March-2004 at 15:11 |
cheers sterling,
not trying to sound stupid what is this alpha n system all about. Heard it mentioned on here a few times. i take it there is no way of telling if the cams have been changed or not in my vehicle. so compared with your car the scricks on top of the 223bhp should see it past the 235 mark.
cheers
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am
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Jonners
Really Senior Member II
Joined: 23-September-2003
Status: Offline
Points: 601
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Posted: 24-March-2004 at 15:11 |
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Uwe - don't you need new connecting rods for the 2.5 conversion - I thought the piston heights from the gudgeon pin were the same on the standard and 2.5 pistons??
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Sterling
Newbie
Joined: 23-March-2004
Location: United Kingdom
Status: Offline
Points: 3
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Posted: 24-March-2004 at 14:49 |
I have had mine for about 3 years and done most of the upgrades you are talking about,remap,cams,2.5 etc..
If you are getting 225bhp as standard without cams you are doing extremely well,as Roops has said some cars dont make those figures with cams.My car is Dec 90 215 bhp,no cat,super sprint mid box,scrapiron rear and it put out;Pre remap 208,after 217,plus 284/276 cams and remap 234.The 2.5 should be finished shortly and will be pleased to make 250 bhp.
I think that if I were in your shoes with 225bhp.I would think about the max alpha N.All the yanks rave about it and it would be cheaper than cams(which I think you might find you already have)if you dont fit the carbon intake.M3pilot is doing this at the moment,wait and see what he thinks.
Cheers Jon
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Eamo
Moderator Group
Joined: 13-May-2003
Location: Ireland
Status: Offline
Points: 3450
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Posted: 24-March-2004 at 14:22 |
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so if one wanted to recond their engine they would be best off getting 2.5 pistons and crank??
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amorgan
Really Senior Member I
Joined: 08-December-2003
Location: united kingdom
Status: Offline
Points: 288
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Posted: 24-March-2004 at 14:08 |
cheers uwe,
thought it sounded a bit too easy to do that way.
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am
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UweM3
Moderator Group
Joined: 11-February-2003
Location: United Kingdom
Status: Offline
Points: 5445
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Posted: 24-March-2004 at 13:49 |
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cecotto147, conversion was done using a 2.3 215bhp engine. It is giving me some trouble at the moment. I bought a used engine for the conversion and it looks like that the block is cracked. The head comes off soon.
Hopefully it will show the fault quite clear.
All you need is a set of pistons and a 2.5 crank. Rest can be used from the 2.3. I have done this together with a full rebuilt, timing chain and all that sort of stuff.
Assembled and mapped by Bexley Motorworks.
251bhp and 191lb torque. (AFM still on and stock 2.3 header and exhaust, no more cat)
as for the regrind cams. Personally I wouldn't do it.
1. Shims getting thicker (more weight for the valve springs to deal with and like mentioned you might run out of thicker shims)
2. cam needs to be re-hardened (any guarantee from the manufacturer of the cam?)
Edited by UweM3
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E61 520d, slow and buzzy but my wallet likes the mpg.....
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215DMX
Really Senior Member II
Joined: 14-May-2003
Location: Croydon
Status: Offline
Points: 1780
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Posted: 24-March-2004 at 13:21 |
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Your a sissy, last one to tell me i'm wrong is a . . .
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Jonners
Really Senior Member II
Joined: 23-September-2003
Status: Offline
Points: 601
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Posted: 24-March-2004 at 13:14 |
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I might be speaking out of turn here as I don't have much experience of the S14, but based on my experiences with other twin cams there is one point to look out for when using reprofiled cams.
When reprofiling, the base circle diameter of the cam is reduced which means that larger shims are needed to adjust 'tappet' clearances. The availability of suitable shims is something worth checking.
As I said, it's possible that I'm showing my ignorance here, but am assuming that the method of adjusting clearances on the S14 is pretty orthodox.
Last one to tell me that I've got this wrong is a cissy.....
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amorgan
Really Senior Member I
Joined: 08-December-2003
Location: united kingdom
Status: Offline
Points: 288
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Posted: 24-March-2004 at 13:02 |
Uwe
What sort of power does that produce. that must br one of the most powerful around.
i have contacted Kent Cams. they can reproduce the schrick profile on your own shafts for 180gbp. they say they have done this for a customer before. So what would be the difference to getting this done and a remap as compared to paying out for the original schrick shaft. Have any of you chaps thought about going down this route?
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am
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cecotto147
Senior Member II
Joined: 16-February-2004
Location: United Kingdom
Status: Offline
Points: 189
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Posted: 24-March-2004 at 12:59 |
 UweM3 wrote:
I bought 290/290 cams. £630 both including shipping.
contact Markus in germany. MG-M3(et)t-online.de
can't really comment about the increase on a 2.3 with this cams. I have done a 2.5 conversion at the same time.
Idle is smooth and they are ok for daily driving.
But above 5000rpm.......juhuuuuuuu |
What have you done to achieve a full 2.5 conversion? Is this based upon a 2.3 engine conversion or a 2.5 engine swap? If you've told all before then i apologise, but can you direct me to the link.
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UweM3
Moderator Group
Joined: 11-February-2003
Location: United Kingdom
Status: Offline
Points: 5445
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Posted: 24-March-2004 at 12:48 |
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I bought 290/290 cams. £630 both including shipping.
contact Markus in germany. MG-M3(et)t-online.de
can't really comment about the increase on a 2.3 with this cams. I have done a 2.5 conversion at the same time.
Idle is smooth and they are ok for daily driving.
But above 5000rpm.......juhuuuuuuu
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E61 520d, slow and buzzy but my wallet likes the mpg.....
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amorgan
Really Senior Member I
Joined: 08-December-2003
Location: united kingdom
Status: Offline
Points: 288
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Posted: 24-March-2004 at 11:44 |
either the 276/284 combo or 2 284's. 295 each plus vat.
they specialise in bmw parts based in the Crystal Palace area.
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am
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cecotto147
Senior Member II
Joined: 16-February-2004
Location: United Kingdom
Status: Offline
Points: 189
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Posted: 24-March-2004 at 11:41 |
amorgan wrote:
best i have found is 295gbp each from c3.
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Is that for 284's or 276's?
And who are C3?????
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amorgan
Really Senior Member I
Joined: 08-December-2003
Location: united kingdom
Status: Offline
Points: 288
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Posted: 24-March-2004 at 11:23 |
What sort of offers are on these at the moment. best i have found is 295gbp each from c3. remap at 400.
If anyone knows, what would be the average cost to fit.
Hi Uwe, in your opinion would you say that the shrick way was the only route to take on the cam front and what sort of increase should i see on these
Cheers
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am
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UweM3
Moderator Group
Joined: 11-February-2003
Location: United Kingdom
Status: Offline
Points: 5445
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Posted: 24-March-2004 at 11:19 |
Darran wrote:
lancelotII wrote:
........seriously thinking that a 2.5 looks imminent.....
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DO IT DO IT DO IT!!!!!  |
Yes Roops go for it! Well worth doing.
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E61 520d, slow and buzzy but my wallet likes the mpg.....
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lancelotII
Really Senior Member II
Joined: 24-November-2002
Location: United Kingdom
Status: Offline
Points: 853
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Posted: 24-March-2004 at 11:19 |
amorgan wrote:
...Are the shrick cams the only way to go or can you go down to people like Kent and get a fast road profile made up from them and then a remap. It would save a lot on cost.
Cheers |
Kent will need to make a cam from a blank, and will probably copy a Schrick as they have done all the hardwork, in terms of lift and lobe profiling. Therefore it may not be cheaper than jsut going and getting a Schrick. Bexley's often have second user cams as people upgrade quite often.
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Darran
Groupie
Joined: 12-November-2003
Location: United Kingdom
Status: Offline
Points: 82
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Posted: 24-March-2004 at 10:39 |
lancelotII wrote:
........seriously thinking that a 2.5 looks imminent.....
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DO IT DO IT DO IT!!!!!
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amorgan
Really Senior Member I
Joined: 08-December-2003
Location: united kingdom
Status: Offline
Points: 288
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Posted: 24-March-2004 at 10:18 |
The figures were quite impressive. car has just had cat ripped out and a panel filter. Should not have cams in it. Thing is and like i explained on another thread last week, the German owner before it came over here paid around 7k for a new engine in 1997 so it has covered only 41k.
Bexley's obviously did not charge me for yesterday so the money has been saved to go down this route. Are the shrick cams the only way to go or can you go down to people like Kent and get a fast road profile made up from them and then a remap. It would save a lot on cost.
Cheers
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am
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lancelotII
Really Senior Member II
Joined: 24-November-2002
Location: United Kingdom
Status: Offline
Points: 853
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Posted: 24-March-2004 at 09:51 |
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That's more than mine makes with Cams........seriously thinking that a 2.5 looks imminent.....
You sure it hasn't got cams already.....
If it hasn't, the 284/276 combo is good (as Darran suggests). If you want a tad more top end grunt 284/284 is better, but it's very marginal.
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cams for e30m3