Home | Register | FAQ | Members List | Calendar | Today's Posts | Search |
Social Groups |
Registered
Members: 13,628 | Total Threads: 40,056 | Total Posts: 470,826 Currently Active Users: 802 (17 members and 785 guests) Welcome to our newest member, itnazeas |
|
|
Thread Tools | Display Modes |
25-12-17, 02:23 PM | #1 | |
Senior Member
Classic Audi Club Member
Join Date: Dec 2013
Location: Back home in Tillicoultry
Posts: 1,308
|
MB / 3B Engine blocks / internals are they the same.
Hi, probably the title gives the question away, but moving on, I am trying to free up space in the garage with a clean out as you will have seen with my for sale posts, I don't want to clear out any thing I may need in the future, I do have an MB block with pistons, oil pump, sump, crank shaft, front pulley, rear crank seal, and from memory this short engine if you like only needs a head to run but I have nothing to put it in, now round to the question, is this block, crank shaft, and oil pump the same as the Audi S2 3B engine, or can anyone confirm the differences between the two engine numbers, I have noticed that the rods I think are 136mm
in the MB same as WR, later engines use a 144mm rod (KV NG 7A 3B ABY) this will mean the crank from the MB will not fit the 3B engine but any KV or 7A will, Merry Christmas to you all. |
|
27-12-17, 10:40 AM | #2 |
Grown up member
Classic Audi Club Member
Join Date: Dec 2010
Location: Bingley
Posts: 634
|
Ok so the stroke of the MB and WR is the same as the other engines ? I thought the crankshaft would fit, if the rods are longer in the other engines this implies the difference is in the piston pin location ?
I'm pretty sure that all the engines with a 86.4 stroke should use the same crankshaft. so it should fit WR/MB/KV/7A/NG/ABY or any of the 2.1/2.2/2.3 5 cylinder engines but not the smaller 1.9 5 cylinder as the stroke is shorter,incidently the 1.9 is the same bore as the 2.1 79.5 mm so the head from a 1.9 should fit a 2.1. Last edited by quattrodave; 27-12-17 at 10:44 AM. |
27-12-17, 12:53 PM | #3 |
4 ring whore!
Classic Audi Club Member
Join Date: Nov 2007
Location: Polmont
Posts: 2,617
|
for some reason the MB crank is different from the others.
It's the same as the 1B / MC. 3B,ABY, RR, 7A, KV and NG all share the same crank
__________________
1991 90 quattro 20v sport 1991 90 quattro |
27-12-17, 06:05 PM | #4 |
4 ring whore!
Join Date: Jun 2008
Location: Rucava, Latvija
Posts: 3,816
|
That reason is different rod bearing seats - rod bearings are in different dimensions.
|
27-12-17, 06:47 PM | #5 |
Senior Member
Classic Audi Club Member
Join Date: Dec 2013
Location: Back home in Tillicoultry
Posts: 1,308
|
What about the MB block can it be used in 3B or ABY?
|
Bookmarks |
|
|