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Location:
Adelaide
Registered:
July 2003
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20v into AE86?? Help Please......
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Mon, 18 August 2003 15:28
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hey guys, i am about to attemt this conversion and im wondering if anyone has done it and can give me some pointers about it? what will go wrong, what will work and not work etc..... any info would be great. cheers
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Location:
NSW, East Coast
Registered:
July 2003
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Location:
NSW, East Coast
Registered:
July 2003
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Location:
Newcastle
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Tue, 19 August 2003 11:47
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I've just got my RWD 20V fired up in my KE20. I think you have a little more room in the 86 and you may not need to get as carried away with the plumbing as I did. If you want pics of my conversion there is a pdf file in the gallery I think its called "RWD 20V conversion the right way" or something along those lines. The photos are a bit old now and mainly focus on the changes I made to the plumbing system (as this is the biggest problem). I've since wired in the computer and all the sensors etc. and had it running (yeeehaaaa!). It is a little tricky and I don't think either of the links above go into detail about eliminating the piping on the back of the head (which I needed to do, but you may not), but it is possible.
Good luck.
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Location:
Adelaide
Registered:
July 2003
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Re: 20v into AE86?? Help Please......
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Tue, 19 August 2003 13:16
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thanks guys. im still not sure on this conversion....
i have been told by some people that the standard 20v computer wont run in a RWD configuration. so i think i will have to get an aftermarket computer straight away. why is this?
also will i just be able to use the standard radiator?
on one of those links there was something about having problems with the distributor...;
"The 20 Valve motor poses even more problems as the distributor is driven off the back of the exhaust cam and may need a firewall recess to fit unless some radical modifications are done to the ignition system."
anyone know if this is correct? what would the options be?
thanks everyone for your help.
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Location:
Newcastle
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Wed, 20 August 2003 06:02
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Yes, the distributor comes off the back of the exhaust cam and in RWD layout goes straight into the firewall. I lathed up a bit of alloy with the o-ring off the dizzy to seal up the hole and removed the dizzy completely. My ignition now uses a crank sensor from the pulley and direct fires a pair of split coils. Yes you must use an aftermarket computer for this, I am using a Wolf3D. That is the easy part though, the plunbing of the radiator hoses is the tricky part. It will depend on the amount of space you have.
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Location:
Sutherland Shire
Registered:
April 2003
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Re: 20v into AE86?? Help Please......
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Wed, 20 August 2003 07:45
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Seadog, where abouts have you got the thermostat in your setup? And where did you get the custom water pipeing made?
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Location:
Newcastle
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Wed, 20 August 2003 12:40
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The thermostat is part of the RWD water pump, so if you use the RWD water pump you already have the thermostat in there. The piping I made myself and it was a shocker of a job. The hard part is where I now have the water coming out of the head, I had to make a new outlet with a bypass back into the water pump which is directly below it. And you have to be able to get to the bolts to fit/remove it, and I also fitted the water temp sensor on it as well so there were a lot of restrictions on the design.
Does that clear it up? It seems a bit confusing.
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Location:
Eskilstuna, Sweden
Registered:
May 2002
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Location:
Mentone
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Wed, 20 August 2003 22:12
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Seadog the way you describe your waterpump mods dosent that mean the block gets cooled first then the head is cooled by the water after which means the head will run hotter than it was designed to. I understood you need to plumb the water pipes to the back of the head and make new inlets and outlets. IF you way works ok that seem like a much easier way though.
Brad
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Location:
Eskilstuna, Sweden
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Thu, 21 August 2003 01:25
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You are correct Brad, the cooling flow is now block first and then head (the same as every other 4AGE). I personally don't think it will make any difference to the running temp of the engine - after all the head is attached to the block isn't it............. 
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Location:
Mentone
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Thu, 21 August 2003 03:51
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That what i wanted to hear. I was worried about hot spots and such. Would it be possible with an electric waterpump to run the water backwards.
Ps are you really in Sweden Youngy
Brad
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 20v into AE86?? Help Please......
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Thu, 21 August 2003 03:54
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For the distributor problem... contact Anthony Kellam from the Twincam16.com forums as he has a lovely kit to suit RWD applications.
Also i *think* it allows you to run standard ECU. Not 100% sure tho.
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Location:
Sutherland Shire
Registered:
April 2003
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Re: 20v into AE86?? Help Please......
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Thu, 21 August 2003 07:30
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Thanks for that seadog. it's all cleared up now
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Location:
Adelaide
Registered:
July 2003
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Re: 20v into AE86?? Help Please......
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Thu, 21 August 2003 12:12
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thanks a lot for all the replies guys
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Location:
Newcastle
Registered:
May 2002
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Re: 20v into AE86?? Help Please......
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Fri, 22 August 2003 02:10
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No probs,
Yes the 20V normally cools the intake side of the head first, then block, then exhaust side of head. Mine goes, block, exhaust side, intake side. While this is perhaps not ideal, it is the same as all the older 4AGE's (as youngy pointed out) so I'm hoping it works. I have had the engine running for a few minutes (with no fans) and there have been no problems with the cooling, we'll see for sure when it hits the road though. One thing I may do is fit the 16V head gasket (if I have problems with current setup). It has holes to allow water from the block up to the head on both intake and exhaust side where the 20V gasket only allows water up on the exhaust side.
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