Have been offered a 20v engine in what we will call unknown condition (was running when purchased 7-8 years ago) for the price of a few beers.
Engine would be a winter project pulling it apart and looking over, and potentially rebuilt if I felt inspired for another project. Currently my AW11 has the early 3 rib block, so the 7rib with the revised crank design is of interest if I wanted to build a tweaked 4age, by all accounts its stronger, and also have better options / support for conrods and pistons etc Question is, on a rebuild, could you take the 20v block and crank, install 16v pistons, and then bolt up my current 16v head to the block? Idea would be in the meantime I could play around with some cams in my current running car if I wanted, and any money spent of parts could be reused if I did go with the rebuilt newer block and crank.
20v / 16v compatibility
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This area is dedicated to technical discussions concerning AW10's and AW11's. Please try to spell correctly because this will help people find information later if they are using search functionality. If you need assistance with your car and want to host a spanner day, please use the appropriate section of the forum: http://mr2.org.nz/phpbb3/viewforum.php?f=35 Thank you.
- thorns
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20v / 16v compatibility
1990 SW20 Turbo, Previously 1991 Green SW20 Turbo basket case
- *84vvt
- Life Member - MR2OCNZ
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- First name: Colin
Re: 20v / 16v compatibility
Silver top or black top?
Don't bother pulling it a part if you plan on rebuilding it
Just drip it off at your engine reconditioners and have them do the work
go for rings and bearings , first if to far gone new pistons
the 16 V head will bolt on to the silver top bottom end.
it will run very well.
Don't bother pulling it a part if you plan on rebuilding it
Just drip it off at your engine reconditioners and have them do the work
go for rings and bearings , first if to far gone new pistons
the 16 V head will bolt on to the silver top bottom end.
it will run very well.
Boosted cars are like hot women.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.
- thorns
- Club Member - MR2OCNZ
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- Joined: Mon Jan 12, 2009 8:54 pm
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- First name: Paul
Re: 20v / 16v compatibility
Silvertop.
Would you swap everything like oil pump, water pump from the current running and good condition 4age in it at the moment?
Also, would this mean I wouldn't need to mess around with re wiring the car and installing a 20v ECU?
Would you swap everything like oil pump, water pump from the current running and good condition 4age in it at the moment?
Also, would this mean I wouldn't need to mess around with re wiring the car and installing a 20v ECU?
1990 SW20 Turbo, Previously 1991 Green SW20 Turbo basket case
- *84vvt
- Life Member - MR2OCNZ
- Posts: 2557
- Joined: Sun Jun 06, 2004 11:44 am
- Stomping Ground: Wellington
- Prime Mover: AW11
- First name: Colin
Re: 20v / 16v compatibility
You should be able to run the later (20V) oil pump "'Its better "
if running the 16 v head run the 16 v ECU,
I haven't done this swap but Michael Alforte has , he may be able to help out a bit more.
if running the 16 v head run the 16 v ECU,
I haven't done this swap but Michael Alforte has , he may be able to help out a bit more.
Boosted cars are like hot women.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.
-
- Club Member - MR2OCNZ
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- Joined: Sat Dec 27, 2014 9:11 pm
- Stomping Ground: Wellington
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- First name: Michael
Re: 20v / 16v compatibility
A bit of a late reply, but yes I do have a 16v head on a reconditioned 20V silvertop bottom end. Pretty much bolt on really. I thing the AC brackets might be different. I removed my AC system so it was not a problem for me. I'm using pistons for a 20V so it's pretty much an interference engine at this point pretty sure.
- 85AW20v
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- First name: Simon
Re: 20v / 16v compatibility
Standard 20v ST is non-interference. BT is interference.
See ya
Simon
AW11 Racecar - 860kg
Simon
AW11 Racecar - 860kg