Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > 3 Series > E30 (1983 - 1991)
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-22-2011, 12:19 AM   #1
BimmerboyPH
5th Gear Member
 
BimmerboyPH's Avatar
 
Join Date: Jun 2006
Location: Smithville
Posts: 981
E30 build questions.

Hey guys,

So I bought an 84 325e a while back and I'm finally about to start building it!!

Just a few questions.

I need an LSD!! What lsd came in the e30 325is? Anyone got one for sale?

Next since i have the e block I want to do the I head conversion. Am I correct in saying all I need is the i head and dme? And that it is in theory a straight swap, or is it a bit more complex?

Thanks in advance.
__________________
88 325is- written off
89 735i 5 spd- traded
89 325is m50 swap- sold
92 325is- sold
97 328is- sold
00 Land Rover Disco- sold
07 328i- sold
84 325e- track car, in progress........ SOLD!
87 325is- FOR SALE
98 328is- Current Daily
BimmerboyPH is offline   Reply With Quote
Old 07-22-2011, 12:53 AM   #2
DIY
Permanently Dirty
 
DIY's Avatar
 
Join Date: Aug 2010
Location: Etobicoke
Posts: 528
I dont know much about the swap but if your gonna put that much effort in I hope your gonna go turbo and you should prob run a standalone, which will be a bonus since you can refresh the wireing and run a map and Iat wich will get rid of the disgusting maf sensor... also if your looking to make good power you should prob look into a e28 diff as the gear in the 325 is might be a little tall, depends what your goals are
DIY is offline   Reply With Quote
Old 07-22-2011, 01:41 AM   #3
daveed
2nd Gear Member
 
Join Date: May 2010
Location: Vancouver
Posts: 97
Quote:
Originally Posted by BimmerboyPH View Post
Hey guys,

So I bought an 84 325e a while back and I'm finally about to start building it!!

Just a few questions.

I need an LSD!! What lsd came in the e30 325is? Anyone got one for sale?

Next since i have the e block I want to do the I head conversion. Am I correct in saying all I need is the i head and dme? And that it is in theory a straight swap, or is it a bit more complex?

Thanks in advance.
I think to do the "I head" swap all you need is the head and dme, but I'm not sure. Do some searches on r3vlimited and e30tech, the info is all there.

Get a 3.73 LSD. That would be the 325is ratio and it's the sweet spot for the b25.
daveed is offline   Reply With Quote
Old 07-22-2011, 07:09 AM   #4
cormier
6th Gear Member
 
cormier's Avatar
 
Join Date: Feb 2008
Location: Mississauga, ON
Posts: 1,568
+1 3.73 is the lowest I'd go -- I don't know if you'll get too much power/effort ratio out of an I head swap , but I don't know too much about e motors either

What else do you have planned for the car? Anything broken need upgrading?
__________________

cormier is online now   Reply With Quote
Old 07-22-2011, 07:19 AM   #5
Vrbovsky
pod stromom
 
Join Date: Aug 2010
Location: The Sticks... London durring the day
Posts: 615
No its not a simple swap. You'll need to deck the block and if you're looking for a power increase you'll need cams. Its a good swap and you can achieve 200+ hp but its no super cheap. Lsd was 3.73 but m3 had 4.10 which is what I have.
Vrbovsky is offline   Reply With Quote
Old 07-22-2011, 08:19 AM   #6
Ceeker
Parts hoarding partner...
 
Ceeker's Avatar
 
Join Date: Nov 2007
Location: Toronto
Posts: 3,361
You will need the "I" head, intake manifold, DME as well. and whatever stuff bolts on to it. if you built it right it could cost about 3-5k from scratch. with this you'll get about 200+ to the rear wheels and you can make it optional for turbo down the road. The compression on the "I" motor is a bit higher then the "E" or super eta.
__________________

I think I've had 14 bmw's in 4 years.
2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
Ceeker is offline   Reply With Quote
Old 07-22-2011, 10:10 AM   #7
InfiniteDice
14 Years with the E30
 
InfiniteDice's Avatar
 
Join Date: Sep 2006
Location: St. Catharines
Posts: 1,126
I have a modified e head from my old 327i it was driven for about 4000km before the car was sideswiped by a few college chicks. It has the I dual springs, I cam and matched ports. I want 200$ for it as I put about 400$ into it when I had it machined, but I'm always open to offers. All the valve guides were replaced and was checked for cracks.

If I ever buy another e it's going in there right away, with the I ecu the difference is substantial.
__________________




Performance one step at a time.

Last edited by InfiniteDice; 07-22-2011 at 10:15 AM.
InfiniteDice is offline   Reply With Quote
Old 07-22-2011, 09:37 PM   #8
Roysneon
2nd Gear Member
 
Roysneon's Avatar
 
Join Date: Jan 2011
Location: Haliwood
Posts: 266
From what I've seen around on R3v a simple "I" head on "E" block will give you a super low compression ratio unless you use a SETA block. Your results may differ.

My 325is parts car had a 3.73 LSD in it.
__________________


What's the difference between a BMW and a porcupine?
Roysneon is offline   Reply With Quote
Old 07-22-2011, 10:00 PM   #9
dble Trouble
TAKE IT TO THE TRACK
 
dble Trouble's Avatar
 
Join Date: Nov 2005
Location: Scarborough
Posts: 1,868
Unless you plan on drag racing I would NOT ever consider a turbo car. Ask anyone on these boards, and if they're honest they'll tell you the same thing. When you're running aggressively, there are major cooling problems, which then sap power or you have to turn the boost way down, not to mention all of the potential for leaks, vacuum or what not. I don't think you'd actually get 200hp to the wheels without some major cams and decking the head etc, which will cost big bucks, cheaper and easier to do a engine swap with a more modern engine....
__________________

BMW 325I E30 Chumpcar Race Car
BMW 540iT M-Sport (New Family Hauler)
BMW 135i Msport Daily/track toy
dble Trouble is offline   Reply With Quote
Old 07-23-2011, 12:08 AM   #10
craz azn
6th Gear Member
 
craz azn's Avatar
 
Join Date: Feb 2004
Location: Port Perry
Posts: 7,486
Send a message via MSN to craz azn
Quote:
Originally Posted by Ceeker View Post
You will need the "I" head, intake manifold, DME as well. and whatever stuff bolts on to it. if you built it right it could cost about 3-5k from scratch. with this you'll get about 200+ to the rear wheels and you can make it optional for turbo down the road. The compression on the "I" motor is a bit higher then the "E" or super eta.
Not sure where you are getting your info from, but there is no way a normally aspirated 2.7l M20 can get even near 180whp without a lot of work... so 200 is a stretch. Like John commented, it won't be cheap, and you are waaaaayyy better off switching to a newer more modern powerplant.

BTW, I have a 3.73 LSD for sale
__________________

Rippin' Proper | Youtube | Vimeo |
craz azn is offline   Reply With Quote
Old 07-25-2011, 12:13 AM   #11
BimmerboyPH
5th Gear Member
 
BimmerboyPH's Avatar
 
Join Date: Jun 2006
Location: Smithville
Posts: 981
Im building this car for the track. I would like to boost it, but my personal feelings are for a track to keep it N/A. That's just me though.

Does the I head bolt onto the e block, or do I need to modify and hack? I can do the work easily, I just wanna know exactly what I'm getting into before I start.

Also does anyone have any of the parts I need for the conversion for sale?
__________________
88 325is- written off
89 735i 5 spd- traded
89 325is m50 swap- sold
92 325is- sold
97 328is- sold
00 Land Rover Disco- sold
07 328i- sold
84 325e- track car, in progress........ SOLD!
87 325is- FOR SALE
98 328is- Current Daily
BimmerboyPH is offline   Reply With Quote
Old 07-25-2011, 12:14 AM   #12
BimmerboyPH
5th Gear Member
 
BimmerboyPH's Avatar
 
Join Date: Jun 2006
Location: Smithville
Posts: 981
Quote:
Originally Posted by craz azn View Post
Not sure where you are getting your info from, but there is no way a normally aspirated 2.7l M20 can get even near 180whp without a lot of work... so 200 is a stretch. Like John commented, it won't be cheap, and you are waaaaayyy better off switching to a newer more modern powerplant.

BTW, I have a 3.73 LSD for sale

How much do you want for the diff? Also with swapping from the factory open diff to an LSD, are there any modifications required, or is it a straight swap?
__________________
88 325is- written off
89 735i 5 spd- traded
89 325is m50 swap- sold
92 325is- sold
97 328is- sold
00 Land Rover Disco- sold
07 328i- sold
84 325e- track car, in progress........ SOLD!
87 325is- FOR SALE
98 328is- Current Daily
BimmerboyPH is offline   Reply With Quote
Old 07-25-2011, 12:20 AM   #13
craz azn
6th Gear Member
 
craz azn's Avatar
 
Join Date: Feb 2004
Location: Port Perry
Posts: 7,486
Send a message via MSN to craz azn
Quote:
Originally Posted by BimmerboyPH View Post
How much do you want for the diff? Also with swapping from the factory open diff to an LSD, are there any modifications required, or is it a straight swap?
Direct bolt in.
__________________

Rippin' Proper | Youtube | Vimeo |
craz azn is offline   Reply With Quote
Old 09-26-2012, 09:44 PM   #14
DIY
Permanently Dirty
 
DIY's Avatar
 
Join Date: Aug 2010
Location: Etobicoke
Posts: 528
I know I'm pulling this from the dead but what ever happened to this build? what parts did you use?
__________________
DIY is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 04:48 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.