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» Fredricks 1971 Corona MarkII
Sat Apr 15, 2017 10:40 am by Fredricktflail

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Fredricks 1971 Corona MarkII

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Fri May 17, 2013 1:24 am

I still havent decided what im doing yet. I know that the trans is shot trans pan had a lot of clutch material in it and there was a hole in one of the filters. Imagine since reverse takes the most fluid pressure to go into gear and then hole it in gear that theres not enough of the reverse clutch left for the pump to be able to pressurerize it. I'd like to do a 3rz theres a couple other engines id like also. I'm gonna go see ive i can break the rest of the trans first though.
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Re: Fredricks 1971 Corona MarkII

Post by 70_Must_Trd on Fri May 17, 2013 1:50 am

Have fun with that. Reverse is notorious for going out in a30's the rest of the gears are pretty solid up against our 50 hp 8r's.

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Re: Fredricks 1971 Corona MarkII

Post by hilux on Fri May 17, 2013 5:31 pm

The reverse brake band is known to break on the A30 due to stress over time caused by the owner not coming to an absolute complete stop before shifting into reverse. Except for that weakness it's a tough and long lasting transmission if the owner drains and refills the tranny oil pan once in awhile.

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Fri May 17, 2013 9:54 pm

I dont think the last owners showed the tranny much love the fluid looked good but that was prolly for the dudes before the tweakers before them and who knows who else ran the car into the ground. I'd rebuild it but i dont really wanna pull the 8r and the a30 out again and then put it back in again for the third time.
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Wed May 22, 2013 8:53 pm

What do you guys think about a 7MGT-E in my corona. Will it fit easily? Id like some options espically from a2ndopinion.
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Re: Fredricks 1971 Corona MarkII

Post by crowncustom on Thu May 23, 2013 5:43 am

7MG-TE would be a big job.They are a fairly long engine so recessing the firewall would be on the cards and extra weight over the front wheels would also be an issue.Have you thought of a 1G engine?Alot shorter than a 7M and roughly the same weight as the old 8R give or take.I have seen this done in an RT81 and I also did a 1G conversion in the RA40 I have but I have since removed it.
Cheers Brett.
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Re: Fredricks 1971 Corona MarkII

Post by a2ndopinion on Thu May 23, 2013 11:39 am

M series swaps are quite popular in Celicas, so I don't see why not in a Corona. JZs are becoming more commonplace as well. Usually just moving the radiator to the front of the radiator support is enough room, and then maybe a pusher electric fan. M series engine mounts can be mixed with 2xR mounts to bolt in.

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Fri May 24, 2013 3:11 am

I'd like to do a JZ engine but you can find M engines waaay cheaper they seem to have a large aftermarket plus their abudent in junkyards which should make it easy to nic nac's etc. I dont mind having to move things i just dont want to cut a hole in the firewall. You think a M engine is really that much heavier than the old solid cast iron 8R? Thanks for the input from both you guys. I'm gonna research it more but I think its a go, its gonna be a total freaking nightmare i imagine but should be fun. I imagine its gonna make the pinion gear explode. A 1g seems like a pretty nice engine but ive never seen one before and im a toyota freak so their pretty rare in my area. I have another question for you a2ndopinion is make 150 to 175hp a reasonable number for horsepower i could make with a 22r without spending 10k on it?
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Re: Fredricks 1971 Corona MarkII

Post by 70_Must_Trd on Fri May 24, 2013 3:43 pm

The 7M is the same difference as a 22r. A bigger, heavier 22r. We rebuilt one for a friend, and it bowed the engine stand.

They're underpowered, heavy, UNDERPOWERED, and they like to blow headgaskets.
Just my .02.

Maybe try for a Beams from an altezza?

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Fri May 24, 2013 4:46 pm

The head gasket problems are easily corrected with a good aftermarket gasket and ARP head studs. I dont see how a corona with a 200+ horsepower 6 will be under powered. I think its too much to start with myself. Beams is a JZ engine right?
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Re: Fredricks 1971 Corona MarkII

Post by a2ndopinion on Sun May 26, 2013 1:06 am

JZ's are probably easier to find in a Lexus. Just walk through a Lexus dealer shop...
150-175 is fairly easy with a 22R, especially starting with a late motor. A good port and polish, oversize valves with slight milling and a decent cam, plus a Weber or EFI, intake and exhaust, and you're right there.
I'm shooting for very close to a 200 HP daily driver with a late 22R/20R headed hybrid, with 10.5:1 compression, then maybe add a 75 HP shot of nitrous...

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Mon Jun 10, 2013 11:07 am

Why do you use the 20r head?
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Re: Fredricks 1971 Corona MarkII

Post by a2ndopinion on Mon Jun 10, 2013 2:07 pm

It can be made to breath better with less work.

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Mon Jun 10, 2013 9:29 pm

I see.
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Sun Aug 18, 2013 1:43 am

the weirdest thing happened reverse started working agian
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Sun Aug 18, 2013 1:43 am

I also cant see what im writeing wtf?
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Re: Fredricks 1971 Corona MarkII

Post by a2ndopinion on Sun Aug 18, 2013 7:59 am

Agree! If you go to update a thread, the text and background is the same color. The only way to see it is to highlight it, and then take a stab in the dark when you go to make a change, Is there a way to change the colors?

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Sat Dec 21, 2013 3:25 am

I bought a weber kit for the car got the brakes all checked out etc just waiting for parts to do some shit to it now
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Sun Feb 02, 2014 3:17 pm

Its Weber powered now kind of a pain in the ass to get the throttle linkage to work.
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You can see my 71 Celica M/C and the new booster i had to get. looks pretty good under the hood now.
I put carpet in and put the raggy old seats back in, still got some wires hanging around itll be fixed up later.
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And how she sits still looks the same minus the front bumper.
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Sat Jun 07, 2014 12:17 am

Well its finally up running and driving needs some front end work and shocks but for the first time since ive had it. it actully drives put almost 100 miles on it this week without pushing it once lol
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Fri Dec 05, 2014 1:14 am

And the Brake cap is off a 87 pick-up that I removed the sensor from
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Sun Feb 19, 2017 1:51 am

Bit of an update. It runs and drives been driving it every weekend bought a w-40 yet to be installed its got the correct brake M/C now all new shocks, fuel cell installed bought a header for a rhd car had to have it modified to fit and still ended up going back to stock. I got a 70 parts car lots of stuff has been going on with her ill need to put pick up
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Re: Fredricks 1971 Corona MarkII

Post by RT85CORONA on Sun Feb 19, 2017 2:09 am

Nicee ive been wanting to drive my corona for a while

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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Thu Mar 30, 2017 11:52 pm

Since the above pics that were took in Jan 2014 a lot of mechanical progress has happed but it still looks ecactly the same minus the rims
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It sat around for about a year without being looked at then i decided to get on it again and I pulled the engine to fix all the leaks and a few other tasks the timing tensioners dident look very good so i replaced the whole chain assembly and every gasket but the head.
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During that time I also replaced all 4 shocks the sway bar bushing cleaned a bunch of stuff new front brake lines and pads and new rear wheel cylinders dident get any pics of that I also put a electric Oil psi gauge in it and a fuel pump relay and harness put New bolts in the converter the pressure plate bolts for 22r fit I used ARP.
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That Header was a pain in the ass it came from down under off Ebay but being for a RHD car it dident fit hit the steering box. I had it modifed to fit and it still has Issues Hits in a full lock left turn on the pitman arm and will be a nightmare to get a tailpipe attached to
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Re: Fredricks 1971 Corona MarkII

Post by Fredricktflail on Fri Mar 31, 2017 12:15 am

I went threw so issues with brake master cylinders though one was bad bought another turned out I forgot I adjusted the booster when I used the M/C for a 71 Celica. I also had a buddy make me a plate to cover the fuel tank hole in the trunk. He also gonna cut the bad part out of my dash and replace it with the piece from the parts car.
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Re: Fredricks 1971 Corona MarkII

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