Humiliated on motorway, need more power!

Discuss general engine, turbo and supercharger conversions in this section

Moderator: martauto

User avatar
JB88
E30 Zone Newbie
E30 Zone Newbie
Posts: 222
Joined: Wed Nov 18, 2009 11:00 pm
Location: Gatwick

Post Sun Mar 07, 2010 11:25 pm

just got back from a little night time spin... i really would like to add more power to my 1988 325i.

the previous owner upgraded the brakes and supension so some time and money saved there.

unfortunatly i havnt really got a grasp on the options so i dont know whats do able and what sort of money im looking at.

could somebody tell me of the most common engine swaps, expected power gains and cost?

would be very grateful.

James
UweM3
E30 Zone Squatter
E30 Zone Squatter
Posts: 1657
Joined: Sun Jul 03, 2005 11:00 pm

Post Mon Mar 08, 2010 8:37 am

It's a 22 year old car, ever thought about that? It's not going to outrace modern machines unless you do something drastic like Turbo, engine swap etc.
A bit of K&N airfilter and freeflow exhaust will not transform it into a sub 14 sec drag racer.

PS watch out on the motorway, they have these little cameras everywhere and I have noticed a lot of unmarked police cars lately.

For a bit of fun take you car to Santa Pod. Full throttle and no fines.
just my 2p
Jim320i
E30 Zone News / COTM Team
E30 Zone News / COTM Team
Posts: 10627
Joined: Sun Oct 25, 2009 11:00 pm
Location: Leicestershire

Post Mon Mar 08, 2010 9:05 am

Can you not just take it somewhere to be tuned slightly? As the engine stands? Also, have you serviced it? Cleaned it all out, checked all pipes etc etc... Generally changed things that need changing? That will help too...
oakey
E30 Zone Addict
E30 Zone Addict
Posts: 4891
Joined: Fri Feb 10, 2006 11:00 pm
Location: Surrey

Post Mon Mar 08, 2010 1:16 pm

I have a 2.7 engine for sale with a proven 215+bhp and a massive whack of midrange torque which is enough in an e30 to deal with most modern hatchbacks and keep up with e46 330i's etc winkeye

Got a set of itb's too...
Image
Speedtouch
Old Skooler
Old Skooler
Posts: 14099
Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Post Mon Mar 08, 2010 1:19 pm

A chip may help liven it up winkeye
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
leeparkes
Married to the E30 Zone
Married to the E30 Zone
Posts: 9538
Joined: Thu Jan 03, 2008 11:00 pm
Location: Black country

Post Mon Mar 08, 2010 4:10 pm

M30's are brilliant on the motorway
Cypriotgeeza wrote:I done both my mates in my old 318is
felt so proud,even tried it with a E30 325i and got put in my place.. :o:
User avatar
JB88
E30 Zone Newbie
E30 Zone Newbie
Posts: 222
Joined: Wed Nov 18, 2009 11:00 pm
Location: Gatwick

Post Mon Mar 08, 2010 5:22 pm

engine has been serviced reguarly no expense spared ever since it left the factory.

so just say i did wish to swap the engine, is there a ball park figure for labour costs?
Last edited by JB88 on Mon Mar 08, 2010 5:28 pm, edited 1 time in total.
leeparkes
Married to the E30 Zone
Married to the E30 Zone
Posts: 9538
Joined: Thu Jan 03, 2008 11:00 pm
Location: Black country

Post Mon Mar 08, 2010 5:24 pm

Depends on what engine you choose
Cypriotgeeza wrote:I done both my mates in my old 318is
felt so proud,even tried it with a E30 325i and got put in my place.. :o:
User avatar
JB88
E30 Zone Newbie
E30 Zone Newbie
Posts: 222
Joined: Wed Nov 18, 2009 11:00 pm
Location: Gatwick

Post Mon Mar 08, 2010 5:30 pm

thats really what i wanted to know. im starting from scratch here.

i see m50's are quite popular and theres a few on ebay for £400.

i was beaten by a peugeot. i dont care what goes in there as long as it shifts!
jmc330i
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 6621
Joined: Mon Jan 10, 2005 11:00 pm
Location: Somerset

Post Mon Mar 08, 2010 5:54 pm

M52B28 with the required M50 bits and a decent remap should be good for 240+bhp .
James
'91 325i Sport
'93 318i touring 16v
rix313
E30 Zone Team Member
E30 Zone Team Member
Posts: 4967
Joined: Fri Oct 31, 2008 11:00 pm
Location: Silverstone

Post Mon Mar 08, 2010 7:45 pm

UweM3 wrote:For a bit of fun take you car to Santa Pod. Full throttle and no fines.
just my 2p
+1

Race tracks are for racing.
User avatar
eta
E30 Zone Regular
E30 Zone Regular
Posts: 356
Joined: Fri Oct 26, 2007 11:00 pm
Location: Glemsford Suffolk

Post Wed Mar 10, 2010 10:53 pm

Chnaging the diff can make a big difference to and is alot cheaper. It all depends on what you have out back atm.

If you avoid racing on the road you can't get humiliated.
MillRat
E30 Zone Newbie
E30 Zone Newbie
Posts: 249
Joined: Mon Dec 07, 2009 11:00 pm
Location: Santiago, Chile

Post Thu Mar 11, 2010 1:47 am

The best tuned M20B25's (in standard form) only make around 100-110 rwkw (135-145 rwhp).

If you seriously want more power out of an E30 then you are looking at 1 of 3 things;
Stroked M20,
Engine swap (M30, M50, SR20, etc..), or
forced induction (turbo, supercharger).

Diff's are good and you will feel a difference if you get the right ratio, however in the end it still comes down to power.

I still don't see how being humiliated on a motorway is any reason to boost the engine power though. It will only lead to signficantly bigger problems later on....
Image

Cheers,
Michael.
User avatar
Kos
E30 Zone Team Member
E30 Zone Team Member
Posts: 15546
Joined: Tue Jul 12, 2005 11:00 pm
Location: London / Cyprus

Post Thu Mar 11, 2010 1:55 am

there will always be some one faster than you
PUKAR DESIGNS - Reproduction BMW Decals Labels Sticker & Number Plates
www.pukardesigns.com
www.facebook.com/pukar.designs/
IG Pukar.Designs
User avatar
doyley123
E30 Zone Newbie
E30 Zone Newbie
Posts: 180
Joined: Mon Nov 17, 2008 11:00 pm
Location: God's country (The Lake District)

Post Thu Mar 11, 2010 6:14 pm

jmc330i wrote:M52B28 with the required M50 bits and a decent remap should be good for 240+bhp .
yeh maybe with a turbo conversion!
ross_jsy
Married to the E30 Zone
Married to the E30 Zone
Posts: 7307
Joined: Sun Jul 12, 2009 11:00 pm
Location: Jersey, C.I.

Post Thu Mar 11, 2010 6:32 pm

i believe its DanThe who has around that figure with no turbo....
jmc330i
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 6621
Joined: Mon Jan 10, 2005 11:00 pm
Location: Somerset

Post Thu Mar 11, 2010 8:54 pm

doyley123 wrote:
jmc330i wrote:M52B28 with the required M50 bits and a decent remap should be good for 240+bhp .
yeh maybe with a turbo conversion!
Sorry, I miss typed, I meant 230+bhp. The M50 inlet and TB (possibly a modded one), a decent induction kit (Ive not looked into it for a year or two, but the one from E36coupe.com seems to give constant results), a decent exhaust and either a chip or remap (depending on the age of the car) will normally give around 230bhp on the 2.8.
Get some cams in there (US M3 ones etc) and maybe the exhaust manifold from the M3 and 240-250bhp could be seen.
ross_jsy wrote:i believe its DanThe who has around that figure with no turbo....
I thought it was him, but wasnt sure if there was a thread for his car - had a quick look but couldnt find it.
James
'91 325i Sport
'93 318i touring 16v
FASTFREDDIE
E30 Zone Regular
E30 Zone Regular
Posts: 343
Joined: Sun Apr 12, 2009 11:00 pm
Location: south london

Post Sat Mar 20, 2010 10:52 pm

motor racing on the highway= instant ban!

how do i know this?

i got caught a few years back

racing motorbikes in london (chelsea bridge) winkeye
its the work of a "maniac"
User avatar
Kos
E30 Zone Team Member
E30 Zone Team Member
Posts: 15546
Joined: Tue Jul 12, 2005 11:00 pm
Location: London / Cyprus

Post Sat Mar 20, 2010 10:55 pm

FASTFREDDIE wrote:motor racing on the highway= instant ban!

how do i know this?

i got caught a few years back

racing motorbikes in london (chelsea bridge) winkeye
unless you are sensible , right place right time winkeye but even then i dont bother any more, track days sort my fix out.
PUKAR DESIGNS - Reproduction BMW Decals Labels Sticker & Number Plates
www.pukardesigns.com
www.facebook.com/pukar.designs/
IG Pukar.Designs
he30
E30 Zone Regular
E30 Zone Regular
Posts: 978
Joined: Tue Oct 31, 2006 11:00 pm
Location: west yorkshire

Post Sat Mar 20, 2010 11:00 pm

Kos wrote:there will always be some one faster than you
listen up folks :roll:

though more power would be fun winkeye
FASTFREDDIE
E30 Zone Regular
E30 Zone Regular
Posts: 343
Joined: Sun Apr 12, 2009 11:00 pm
Location: south london

Post Sat Mar 20, 2010 11:03 pm

exactly mr kos one must be careful .

stick to trackdays it works out cheaper :wink:
its the work of a "maniac"