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Location:
Outer-eastern Melb
Registered:
June 2004
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Old School Conversion!
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Sat, 19 June 2004 00:51
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Hey everybody, I'm brand new to this forum so I don't know if I'm going to get the crap moderated out of this post or not, let's see...  I tried the search function, no avail.
Anyway here's my quandary. I have a real old Corona (1967) which I got for free as my first car, handed down from one generation of poor people to the next. It's come to the stage now where my mistreatment of it is finally taking a toll after years of hard work - the engine has low oil pressure etc and is running like rubbish so I thought I'd take the opportunity to try something my mechanic bought up once, replacing the classic 2r with a 5r (from a Dyna), which is what he recommended. I was just wondering if they do indeed have the same bolt pattern etc, what extra bits I'd need and what sort of costs we are looking at.
Thanks heaps in advance!
Check out some photos:
http://dero.servebeer.com/corona/corona.htm
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: Old School Conversion!
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Sat, 19 June 2004 01:36
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We did this years ago (> 15). From memory (which is hazy), we used a 5R from an RS50 Crown, swapped the sumps and we were away. It went better but don't expect tyre sizzling performance (we called ours the "5R funny car" because it would start up in less than 5 seconds).
The 3 mains crank 5R (early) has exactly the same bellhousing bolt pattern so it's a direct bolt up proposition. The later 5 mains 5R are like an 18R so they won't bolt up. Look at your 2R - there is a "cowl" at the back of the block that your 2R and early 5Rs have that the later 5Rs do not.
Also being a truck engine, you might be surprised at the expense of an engine even though it's a shitty old 2 litre.
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Location:
Christchurch, New Zealand
Registered:
March 2004
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Re: Old School Conversion!
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Sat, 19 June 2004 01:53
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Depends how envoled oyu want to get, if gone for the 18rgeu twin cam conversion on my rt40, this requires some fabrication, however early 12r's are also direct bolt in.
check out
www.toyotacorona.com
Logan
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Location:
Outer-eastern Melb
Registered:
June 2004
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Re: Old School Conversion!
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Sat, 19 June 2004 01:59
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Yeah, I'd considered that. It looks like I can pick one up for around $1000 - $1500, but the fact it's a truck engine is also appealing to me - the the idea of an engine designed to >700,000ks is comforting
I was planning on getting the older one, I think it was early 70s when they changed it over?
I'm more inclined to believe you if you've done it, but my mechanic said that the performance was pretty good - ie, you could usually start off in 2nd as if it was first etc. Does anyone have a figure on the power of the 5r? I figured with the weight of the car being 900 and the 5r being 79kW@5200 (according to http://www.reanimotion.com/ToyMods/EngineSpecs.htm) it wouldnt be too bad, considering my ratshit VN calais is ~112kW and weighs twice as much...
Edit: thanks SRacin, sorry I didnt see your post! That sounds pretty damn good, I'll look into it!
[Updated on: Sat, 19 June 2004 02:02]
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: Old School Conversion!
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Sat, 19 June 2004 02:12
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The 5R you will be using will be from the late 60's to early 70s (maybe even up to 1974 or '76 - not sure) - that would make them 30 years old at least.
These are low compression pushrod motors. The maximum power quoted for these motors way back in 1968 was 95 hp @ 5000 rpm (direct quote from the original engine manual I have). The hp gain is not significant. It'll go better than what's there (particularly if the 2R is about to die) but don't expect anything scintillating. I'd suggest the figure you quoted was for a later 5 mains variant.
If you are after a significant performance gain, I would do the 18RG thing as SRacin suggested.
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Location:
sydney
Registered:
May 2002
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Re: Old School Conversion!
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Sat, 19 June 2004 16:29
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greta car the old coronas. was going to get one after going for a ride in my mates fj turbo powerd one my choice would be the 18rg for sure.
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Location:
Christchurch, New Zealand
Registered:
March 2004
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Location:
Outer-eastern Melb
Registered:
June 2004
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Re: Old School Conversion!
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Sun, 20 June 2004 01:52
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Nice work! Did you do all the respray yourself? What extra bits did you need to put it in? Looks awesome!
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Location:
Christchurch, New Zealand
Registered:
March 2004
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Re: Old School Conversion!
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Sun, 20 June 2004 02:45
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lol, conversating on two boards at once, did the painting in my garage, but have a top quality painter friend, i couldnt belive the whiteness of it!  need sunnies. Paint is just a resene arcylic tinter white with a blue tint, straigt of the gun, no clear coat, but the outside is getting same paint with blue pearl and lotsa clear... Anyway Have to sus out some high res pics...
Conversion basic checklist.
-engine mount adpater plates 10mm thick plate to move mount point ~100m back and 20mm down.
-custom gearbox x-member as im using a w55 (may change back to w50 so can use standard x-member
-return line with efi pump and extra boss in tank (level sender panel) for return
-wiring
-all new suspension, cause they are very worn after 30+ years
-driveshaft from rt8x
-battery in boot
-exhaust
-big brakes (yet to discover an easy solution, but metal kings are available) rt80 stub axles will bolt up for discs if yours are drum...mine has twin pot calipers standard..but are mini size.
If i think of anything else will post it up
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