M40 / M42 Engines

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E30 M42 swap infomation

Last post by rix313 « Mon Nov 24, 2025 9:07 pm
Replies: 213
by rix313 » Sat Feb 06, 2010 8:41 pm
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213 Replies

232303 Views

Last post by rix313
Mon Nov 24, 2025 9:07 pm
BMW E30 318iS, 318i, 316i fuel pump

Last post by rix313 « Sat Jan 22, 2022 10:21 pm
Replies: 7
by rix313 » Wed Apr 22, 2020 8:28 pm

7 Replies

8095 Views

Last post by rix313
Sat Jan 22, 2022 10:21 pm
M42 exhaust manifold VS M44 exhaust manifold

Last post by martauto « Sat Dec 04, 2021 12:56 pm
Replies: 1
by adiethirteen » Sat Dec 04, 2021 10:43 am

1 Replies

6113 Views

Last post by martauto
Sat Dec 04, 2021 12:56 pm
M40 and M42 Wiki Pages

Last post by Grrrmachine « Thu Mar 28, 2013 4:23 pm

by Grrrmachine » Thu Mar 28, 2013 4:23 pm

0 Replies

6408 Views

Last post by Grrrmachine
Thu Mar 28, 2013 4:23 pm
M40 Top End Engine Noises

Last post by twright « Mon Jan 22, 2024 12:32 pm
Replies: 2
by twright » Sun Jan 21, 2024 3:30 pm

2 Replies

3964 Views

Last post by twright
Mon Jan 22, 2024 12:32 pm
Thoughts on the M40 Engine

Last post by 30316 « Mon Jan 15, 2024 10:15 pm
Replies: 4
by bruzehual » Sat Oct 16, 2021 5:54 pm

4 Replies

6364 Views

Last post by 30316
Mon Jan 15, 2024 10:15 pm
ARP head studs

Last post by rix313 « Mon Sep 18, 2023 1:12 pm
Replies: 2
by TeddyK » Wed Jul 26, 2023 1:48 pm

2 Replies

6245 Views

Last post by rix313
Mon Sep 18, 2023 1:12 pm
BMW M40 idle...

Last post by elvirbgd « Thu Mar 24, 2022 8:05 pm
Replies: 3
by elvirbgd » Tue Dec 07, 2021 4:17 pm

3 Replies

5687 Views

Last post by elvirbgd
Thu Mar 24, 2022 8:05 pm
Help! Hydraulic lifters

Last post by elvirbgd « Tue Dec 28, 2021 4:37 pm
Replies: 3
by TeddyK » Sat Oct 23, 2021 8:08 pm

3 Replies

5094 Views

Last post by elvirbgd
Tue Dec 28, 2021 4:37 pm
Overtightened timing belt on BMW E30 M40 ?

Last post by elvirbgd « Sun Dec 05, 2021 4:37 pm
Replies: 3
by elvirbgd » Sat Dec 04, 2021 11:59 am

3 Replies

5548 Views

Last post by elvirbgd
Sun Dec 05, 2021 4:37 pm
MPG?

Last post by twenty « Tue Oct 12, 2021 10:32 am
Replies: 1
by KitTheRam » Mon Oct 11, 2021 6:59 pm

1 Replies

4870 Views

Last post by twenty
Tue Oct 12, 2021 10:32 am
M40 Cambelt DIY Replacement Guide

Last post by Brianmoooore « Sun Mar 28, 2021 11:27 am
Replies: 4
by spannerrash » Wed Feb 26, 2020 9:34 pm

4 Replies

8527 Views

Last post by Brianmoooore
Sun Mar 28, 2021 11:27 am
M42 wiring loom - automatic - problem

Last post by JohnA « Thu Feb 04, 2021 8:28 am
Replies: 9
by JohnA » Sun May 31, 2020 6:13 pm

9 Replies

10804 Views

Last post by JohnA
Thu Feb 04, 2021 8:28 am
M42 engine wiring / hoses

Last post by rix313 « Fri Jan 01, 2021 9:16 pm
Replies: 1
by TeddyK » Fri Jan 01, 2021 8:27 pm

1 Replies

5231 Views

Last post by rix313
Fri Jan 01, 2021 9:16 pm
Blue temp sensor ground located?

Last post by rix313 « Sat Nov 28, 2020 8:38 am
Replies: 2
by NoTurbo » Sun Nov 22, 2020 1:13 pm

2 Replies

5761 Views

Last post by rix313
Sat Nov 28, 2020 8:38 am
M40 Intake Noise

Last post by twright « Tue Nov 10, 2020 11:23 am

by twright » Tue Nov 10, 2020 11:23 am

0 Replies

5232 Views

Last post by twright
Tue Nov 10, 2020 11:23 am
M42 ECU. E36->E30

Last post by joew23 « Tue Oct 27, 2020 2:39 pm

by joew23 » Tue Oct 27, 2020 2:39 pm

0 Replies

4754 Views

Last post by joew23
Tue Oct 27, 2020 2:39 pm
No RPM

Last post by NoTurbo « Tue Aug 25, 2020 7:23 pm
Replies: 9
by NoTurbo » Sat Aug 15, 2020 8:15 pm

9 Replies

11496 Views

Last post by NoTurbo
Tue Aug 25, 2020 7:23 pm
318is Oxygen Sensor?

Last post by Zimmy318i « Sat Jul 25, 2020 8:41 am
Replies: 7
by LGK6D » Sun Feb 11, 2018 6:00 pm

7 Replies

6655 Views

Last post by Zimmy318i
Sat Jul 25, 2020 8:41 am
M42 overbore problems.

Last post by rix313 « Sun May 24, 2020 6:27 pm
Replies: 7
by rsjon » Sun May 03, 2020 12:01 pm

7 Replies

7167 Views

Last post by rix313
Sun May 24, 2020 6:27 pm
M42 exhaust manifold studs / nuts

Last post by rix313 « Tue Apr 28, 2020 4:55 pm
Replies: 1
by TeddyK » Mon Apr 27, 2020 8:08 am

1 Replies

5540 Views

Last post by rix313
Tue Apr 28, 2020 4:55 pm
Ticking noise at motorway speeds

Last post by Brianmoooore « Wed Feb 26, 2020 10:54 pm
Replies: 8
by BeauSpivey » Thu Jan 23, 2020 3:26 pm

8 Replies

6782 Views

Last post by Brianmoooore
Wed Feb 26, 2020 10:54 pm
M42 performance chip

Last post by TeddyK « Tue Feb 04, 2020 11:19 am
Replies: 2
by TeddyK » Tue Feb 04, 2020 9:54 am

2 Replies

6294 Views

Last post by TeddyK
Tue Feb 04, 2020 11:19 am
Misfire? M40b16 engine loss of power, 5000rpm

Last post by rix313 « Sun Dec 08, 2019 9:05 am
Replies: 3
by blood69 » Wed Jun 05, 2019 3:00 pm

3 Replies

6558 Views

Last post by rix313
Sun Dec 08, 2019 9:05 am
M40b18 & M40b16 Turbo Manifolds for Sale $250

Last post by DIYTuning « Sun Dec 01, 2019 6:23 pm
Replies: 5
by DIYTuning » Sat Nov 30, 2019 12:22 pm

5 Replies

7042 Views

Last post by DIYTuning
Sun Dec 01, 2019 6:23 pm
anyways to get power from a m40b18 without turbo

Last post by boiliebasher « Sat Nov 30, 2019 5:26 pm
Replies: 4
by bodhie30318 » Fri Nov 11, 2016 4:55 am

4 Replies

10683 Views

Last post by boiliebasher
Sat Nov 30, 2019 5:26 pm
Exhaust for my 318is

Last post by Alistair « Wed Nov 13, 2019 9:43 am
Replies: 5
by Tombo » Tue Oct 15, 2019 10:37 am

5 Replies

6614 Views

Last post by Alistair
Wed Nov 13, 2019 9:43 am
M40 sump swap

Last post by rix313 « Mon Nov 11, 2019 3:11 am
Replies: 5
by boiliebasher » Sun Nov 10, 2019 4:46 pm

5 Replies

6221 Views

Last post by rix313
Mon Nov 11, 2019 3:11 am
M42 workshop manuals

Last post by Alistair « Sat Nov 09, 2019 7:00 pm
Replies: 1
by Dave72 » Tue Jul 24, 2018 2:58 pm

1 Replies

6268 Views

Last post by Alistair
Sat Nov 09, 2019 7:00 pm
M40 1.6 to 1.8?

Last post by Speedtouch « Mon Oct 14, 2019 3:37 pm
Replies: 4
by TeddyK » Wed Oct 09, 2019 11:22 am

4 Replies

6127 Views

Last post by Speedtouch
Mon Oct 14, 2019 3:37 pm
Making an M40 a bit nippier

Last post by Caravanking « Tue Aug 13, 2019 7:56 am
Replies: 5
by alexbaker1989 » Thu Jun 20, 2019 1:17 pm

5 Replies

11011 Views

Last post by Caravanking
Tue Aug 13, 2019 7:56 am
M40 Exhaust Port Diameter

Last post by stones « Mon Jun 03, 2019 5:55 pm
Replies: 2
by danllew » Mon Jun 03, 2019 10:06 am

2 Replies

5842 Views

Last post by stones
Mon Jun 03, 2019 5:55 pm
2019 M42 parts checklist?

Last post by rix313 « Thu May 30, 2019 11:57 am
Replies: 1
by TeddyK » Thu May 30, 2019 10:54 am

1 Replies

5996 Views

Last post by rix313
Thu May 30, 2019 11:57 am
gearbox compatibility

Last post by Brianmoooore « Fri Mar 01, 2019 11:49 pm
Replies: 1
by eddiewilsonzim » Fri Mar 01, 2019 10:08 pm

1 Replies

5288 Views

Last post by Brianmoooore
Fri Mar 01, 2019 11:49 pm
M42 sump

Last post by rix313 « Thu Dec 13, 2018 1:42 pm
Replies: 4
by B1N9S » Tue Jul 10, 2018 6:30 am

4 Replies

6672 Views

Last post by rix313
Thu Dec 13, 2018 1:42 pm
M40 to m20 swap

Last post by e30Alex « Sun Dec 09, 2018 10:44 pm
Replies: 2
by e30Alex » Tue Dec 04, 2018 4:41 pm

2 Replies

5419 Views

Last post by e30Alex
Sun Dec 09, 2018 10:44 pm
Camshaft change advice

Last post by Brianmoooore « Sun Nov 25, 2018 9:15 pm
Replies: 2
by senna » Wed Nov 14, 2018 5:47 pm

2 Replies

6267 Views

Last post by Brianmoooore
Sun Nov 25, 2018 9:15 pm
BMW 318i M40 Metallic noise - HELP

Last post by magpie « Sat Nov 17, 2018 7:51 pm
Replies: 2
by sniper_slb » Tue Apr 25, 2017 9:11 pm

2 Replies

6734 Views

Last post by magpie
Sat Nov 17, 2018 7:51 pm
M42 2.1 Stroker Turbo or Supercharged

Last post by MarcoPratas « Wed Aug 29, 2018 1:52 am

by MarcoPratas » Wed Aug 29, 2018 1:52 am

0 Replies

5900 Views

Last post by MarcoPratas
Wed Aug 29, 2018 1:52 am
M42 e30 running very rich and stalls when idle

Last post by selespeed « Sat Aug 25, 2018 5:25 pm

by selespeed » Sat Aug 25, 2018 5:25 pm

0 Replies

6219 Views

Last post by selespeed
Sat Aug 25, 2018 5:25 pm
Oil consumption

Last post by arrisbmw « Thu Aug 02, 2018 11:17 pm
Replies: 1
by maxime_vhw » Sat Jun 02, 2018 8:21 pm

1 Replies

5909 Views

Last post by arrisbmw
Thu Aug 02, 2018 11:17 pm
M42 sump

Last post by B1N9S « Tue Jul 10, 2018 6:30 am

by B1N9S » Tue Jul 10, 2018 6:30 am

0 Replies

5451 Views

Last post by B1N9S
Tue Jul 10, 2018 6:30 am
Mods on a E30 318i M40

Last post by Fakes2205 « Mon Jul 02, 2018 6:06 am
Replies: 2
by Fakes2205 » Fri Jun 29, 2018 3:26 pm

2 Replies

10480 Views

Last post by Fakes2205
Mon Jul 02, 2018 6:06 am
M40 afm mismatch

Last post by sazwex « Wed May 23, 2018 10:59 am
Replies: 2
by sazwex » Wed May 23, 2018 9:09 am

2 Replies

7405 Views

Last post by sazwex
Wed May 23, 2018 10:59 am
ecu

Last post by slapeddicus « Mon Apr 16, 2018 7:25 pm

by slapeddicus » Mon Apr 16, 2018 7:25 pm

0 Replies

8833 Views

Last post by slapeddicus
Mon Apr 16, 2018 7:25 pm

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M40 / M42 Engines

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