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Rhyscar Toyota Corolla KE20 Rally car


Rhyscar

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  • 1 month later...

All back together now. Finishing details take forever and cost the most! Has come together very nicely though everything looks awesome and works well.

 

Dash complete, wiring all sorted, windows and doors back on and car runs. Starter motor/alternator wiring was pretty frustrating there just isn't any room! plenty of heat shield and shrink wrap to make sure it lasts the distance and we never have to take it out again. Is running a massive starter off a 5K van or something so that doesn't help.

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Did a final spanner check and got the basics of the graphics done. Also spent an evening fitting out the safety items and padding the rollcage.

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Took it out for a shakedown on the backtrack at Manfield last weekend to make sure nothing will fall off. Was more of a motokhana/autocross setup which didn't really suit the rally tyres + suspension but it was still good to throw it sideways. tried to use as much grass as possible to make it more interesting/do some skids

 

a couple old toyotas, worlds apart

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Lunch is always the most important part of any motor racing event - the way it should be. parked up under the toyota sign for nostalgia's sake.

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We have entered our first rally for next weekend. It is a clubmans rally in Tauranga for novice drivers which describes us to a tee! 80km of stages should be a good introduction and should be a blast. Still plenty more things to get sorted with the car; Diff has a leak, need catch can sorted, hole in tunnel to cover, mudflaps to make + attach... the list goes on but we will make it.

Most importantly I need to sit my rally license and get the authority card back from MSNZ! Will all be worth it when we can throw some stones around - hoping to have some vid of the 4K going strong on the gravel.

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It's the finishing details that take the most amount of effort. Been a big week but making good progress

Mounted new oldschool looking tachometer. Definitely going to be seeing 8k frequently!!

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Gear lever boot all sorted. Looks nice and tidy and keeps the wind on the outside!

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New catch can and breather hoses I slapped together tonight

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Spare tyre mounted - nick did a super nice job with this one

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Restored toolbox is a perfect place for the tow rope!

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Good solution for not having a Terratrip/monit. Downloaded free app that had gps speedo and trip meter. Had another app that was a clock set to rally time. Co driver could just operate the touch screen dash. Worked really well and was accurate to within .1-.2km over a 15km stage or so.

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Some cool stuff in the engine as nick pulled it down. Thought it would be pretty simple but it has had some serious work done with forged pistons, very well ported head, nicely lightened crank etc etc

Pity all the pistons are stuffed and there is a crack in the head.

Apparently we can weld the head but are going to need to find more pistons.

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  • 3 weeks later...

So we spent yesterday building this motor. In continuing tradition, plenty of alcohol was consumed throughout the day and everything took twice as long as it should of as we were going through and double or triple checking everything but at least we know it's right!

Exibit A: carbs

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So these bad boys may have been part of what leaned it out. So they are off to roskilda next week to get checked out and setup for running in this motor.

Exibit B: new pistons!

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Got new block and pistons from Brad. They are 10thou oversized Arias pistons. Fitted up with the standard rods and the crank from the old engine.

Exibit C: precision ring grinding

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Had to get 20thou oversized rings and grind them down to fit. Took some time with a broken file.. haha

Exibit D: head job

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Graham from B&H in palmy had a look at the head for us and deemed it was good enough to use again. Have him the head to find some valves and sort it out. Did an awesome job, skimmed the head and the block, turns out the head is from a 5k. Graham did 2mm oversized intake and 1 mm oversized exhaust valves and Did a 3 angle valve grind also.

Roskilda wanted to know compression ratio for the carb setup so we put the head on the level bench, and measured water into it until it was to the top. Worked out the compression chamber to be 17.5 cc.

Exibit E: maths hurts my brain

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Compression worked out to be 12.9:1 which is relatively high. Need to make sure everything is right or else we will have built another grenade.

Also turns out we are close to 1400cc which actually works out alright as class A rules have changed to include 1400s.

One of our concerns was with the height of the pistons coming right to the top of the block deck, 12 mm lift on the cam and naff all compression chamber, Google provided us with a recipe for playdough to measure valve clearance.

Exibit F: playdough making

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Turns out we have just on the manufacturers specs for clearance after a putting the head on and off about 5 times. At first we had some slight contact but after redoing the cam timing and checking it again and again we got it right.

Quite a cool double timing chain and sprockets

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By the end of the night things were getting a bit blurry but at least we got it together and done right. Will piece the rest of it together over the next week and get it back in the car to run in and get tuned by Roskilda.

Going through and replacing the fuel pump and regulator with good quality stuff also as well a s rewiring the charging system.

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  • 5 weeks later...

Daybreaker just around the corner.

So it turns out we did an ok job of building the engine drunk as anything. Ended up essentially completely rebuilding the carbs. Got it running to run engine in and the fuel pump gave up. Also replaced the reg with a holley one, now we have mint fuel pressure all the time.

Big thanks to Roskilda autos for the time spent on the Dyno and rebuilding the carbs and did a good job.

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Made some (not much) horses approx 87hp which wasn't altogether bad. Has heaps of torque for a 1300 and pulls through the gears well with the TRD ratios

Apparently plenty more in it with more timing but goal is to keep it reliable and not have to rebuild the engine every year..

Found one of the wedges which hold the rear calipers in place was missing also so desperately in need of some ae86 rear calipers even if it's only to borrow for the daybreaker. Having a look at down at oldschool today hopefully.

Just tidying up the final bits and pieces of wiring and having the alternator re kitted to make sure it can handle running the 4x hella spotlights we'll need for the first two stages (4am start Woohoo)

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  • 2 weeks later...
  • 3 months later...
Managed to fix (mostly) the wiring issue that hampered us at daybreaker. Which reminds me I still need to machine an isolating post... 

This gives you an idea of how tight/close the extractors/start motor/alternator are. 

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Have taken the wiring around inner guard with a new grommet and in behind the alternator in a hope of having less heat this way. Learnt a few interesting things about rating of automotive wire as well which no doubt explains the melt down.. 

 

Had a bit of an issue before xmas. car was performing some ceremonious drinking voodoo dance around the clothes line. Managed to spit the alternator/water pump belt and get awfully hot. It seems the pistons grew by 1mm and the valves grew by 1mm, evaporating our 2mm of piston-valve clearance.. bent all the exhaust valves but luckily no other damage so new valves have been installed and head gasket is on its way from Japan (not overnight unfortunately)

 

Currently investigating how we can quicken up the steering. Don't want to install a quickner as then it will require a cert so we are thinking about making new gears for the steering box. has anyone had any experience with doing this before? We've got to imporve on the 4 turns lock-lock we currently have its easy to end up with an extra turn of lock in your hands at stages which is a bit too much to deal with on tight twisties!

 

Keen to do some skids in this thing soon!

 

 

Some old pics of this thing came up from when it was down south thanks to smokin'joe. Cool to preserve it's history/glad we got it fully white!

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Unsure on if I will bring this up to Leadfoot or not, needs the panel work repaired and its a long way to drag it to not compete in anything. Will see how in the next week or two. 

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  • 6 months later...

After the flywheel warped we mucked around for quite a while trying to figure out what to do. After talking to some old guys from down south decided to down rate the clutch from the 4age 200mm paddle clutch to a standard 4k size exedy heavy duty. Main reasoning for this was the overall clutch/flywheel assembly weight ends up about the same but with a lighter clutch all the weight is in the flywheel where it should be so drivability is much better. Works a charm and drives much better now. Friend machined a standard flywheel down from 11 kg to approx 5kg still has plenty of meat left in all areas.

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Sandblasted a set of wheels so we can paint them silver. Should look much better than the white..

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Done some panel work to tidy up the dent I put in it at daybreaker last year. Turns out that corner has been repaired before but still turned out pretty good. True test will be once its painted. Still waiting for painter availability.

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  • 8 months later...
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I think the paint is acceptable....
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Flywheel ended up coming loose due to being warped. Always had issues with clutch being extremely difficult to drive so replaced it with an Exedy HD unit which is smaller in dia nad much more progressive so we can give it plenty of slip to get it off the line with the very high first gear. Lightened the flywheel as much as we could, think it got down to about 5kg or so which isn't bad. 
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First event I did was Otaria rd run by Dannevirke car club. First time in the car for a while so was pretty rusty. Good battles with Blake/Blizzo though. Won A class and got a sweet certificate. 
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Tararua rd was next. bit longer so managed to get into it a bit more/blow out some cobwebs. Car went well all day but struggled to commit/stop being a pussy. Managed to find some pace in the last run and beat Blake for A class honours again. 
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There was a cool ke26 which has been running in the series too!
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Here's a helmet-cam view of the first and slippery-est run of the day
 
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After catching up with mates in palmy after tararua rd, I got up at 3am to make it to a gravelsprint in Pirongia. Early morning trip and day of rallying was tough work on 4 hours sleep! Was well worth the effort though at 9km long. 
 
Was a cool datsun 1200 running that day also. Ex Reg Cook car from 70's with a Nissan Micra EFI engine and 7 speed sequential box. Needless to say it was 30sec quicker than me!
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Road was epic fun but had fuel pump woes by the end of the day. Trying to get to the bottom of it now. 
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  • 2 months later...

So I finished off the last round of the sprint series run by Dannevirke car Club with Blizzo/Blake.

Managed to beat him just in the end but the corolla was running like a massive pack of slimy balls and managed to slip the clutch too much on the last run and couldn't get it to hold 3rd. 

Placed second for the day but since he had done 1 (or 2?) more rounds than me and came 2nd to me each of the other events he was way too far in front to catch. Was happy with second in A class for the series as both Blake and myself were quite often towards the pointy end of the 1600cc class also. 

 

Day was wet and slippery and cold. I only had some crap old hard silverstones for the rear (they are rubbish when they are new yet along 5 years old!), and some very worn dunlops on the front. Was a narrow and short bit of road which I struggled to precisely attack without overcooking it. plenty of laughs were had though which is the important thing!

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Next on the list is rally Tauranga next weekend (17th July) at Tect park - come along if you're looking for something to do!. We DNF'd in this event 2 years ago when the engine expired completely so will be rewarding to get to the end of it. Seeded quite low so I imagine we are going to be doing quite a bit of passing - and hopefully no shunting!

 

So since Nae Nae rd Nick organised a new Puk clutch for the exedy pressure plate to get rid of the slipping. Seems to work Ok but hasn't had a real test yet. Was also in need of a good service of new plugs, leads and some gearbox oil. 

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The old plugs we were running were superseded and there was a resistor and non-resistor option. Got both and will see how each goes. Definitely running a lot smoother now and not coughing and farting like it was. Feels like we actually have all of the 88 horsepowers back now which is relieving!

 

Also had questions over the strange behavior of the fuel reg. Would jump all over the place and generally just be unpredictable so ordered a new diaphragm and spring kit for $30 (they are only $6usd from summit GRRR) which did the trick nicely. When I took it apart there was fuel on the top side of the diaphragm also which explains the lack of functioning regulation. Its now super steady and runs like a dream :) very happy. 

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New set of dunlops for the car too. Looking forward to having grip again!

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Looking forward to next weekend and not being hampered by how poorly it has been running. After that the car will head back to palmy into storage at Nicks for a while so I can focus on getting my AE101 racecar finished. Might aim to do one or two rallies next year maybe just to try beat Blake in the series this time. 

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  • 2 months later...

Cage done. Super happy with the cage Nick did a great job on it and is much higher quality than most cages you see out there. Seats almost mounted also. Almost sit in the back seat its wicked. 25m of rollcage tube later.. 

 

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Yup she's pretty tight against the pillars and roof. Perfect fit!

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  • 2 months later...

Nicks managed to paint the inside and underneath of the car. A huge amount of work has gone into seam welding/strengthening and tidying up the shell before this stage. Most of the panel work on the car has been completed also, doors and guards will be going to panelbeater in the next week or two to get tidied up and sprayed professionally to make sure its the best quality finish we can afford. 

Like a brand new car
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Twin batteries in the rear seat this time. Previously had single battery in boot but was a bit of a pain in the arse and would like to run 2 batteries if we end up with charging issues etc. 
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Strut tops have been strengthed so we can do some mad jumps. 
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So I've been between jobs for a few days so spent a bit of time in palmy helping Nick out assembling and cleaning stuff. Everything is being cleaned, repainted and repaired before being installed. Time consuming but will be worth it in the end. 

Got the car rolling. Subframes/suspension and diff have all been sanded back and repainted with CV black which should wear pretty well with the stones. They look amazing (picture doesn't do them justice)
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Mounted fuel pump (Nick was cringing while I drilled holes in the brand new paint). Spent heaps of time cleaning fuel and brake lines then covering with protective rubber/plastic tube to protect them from the stones. 
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Foot plates re-installed. Also cleaned and repainted the heater box and installed the wiper assembly and steering column/pedal box. 
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With this cage we were able to move the seats back a good couple of inches. The seating position was very tight before and we are both 6 foot so being able to move the seats back and lower will make a huge difference. Really looking forward to driving it like this!
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Thumbs-up seal of approval...
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