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HR 50th Anniversary rebuild

I have been planning this for more than 5 years. Took her off the road in 2012, been on Jack stands since then. Now its time to do it. I have owned my HR since I was 19, that was 1979. Rebuilt a couple of times over that time period. Never been happy with promised engine output. Now to do it properly. After several months of trying to find a std bore 202 I finally found one! Needless to say I now have 5 202/3.3 blocks of all colours......So now my engine build can begin. Planned JZED head, lots of internals, EFI Hardware injection, four wheel discs & 5 speed. Hopefully get more than double the original HP! Should be fun trying. Will have to watch the cost in a few areas but hey money is for spending!

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Comments

Sounds great. Years ago I built a 235 stroker with an alloy 12 port yella terra head and a Magee injection setup on it. Heaps of torque and went like a cut snake. Your plans sound good. You shouldn't have a problem doubling the horses. Mine made around 300. Lots of machine work.

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What custom work do you have planned for it.

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Disclaimer :- The above is purely speculation and is only posted for entertainment purposes!!!

No Ford bumpers I hope! Good luck, like to still have couple of my first cars.

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Archie

Yes lucky to have held on to my old girl. Lasted longer & more reliable than most relationships....haha. It had a HG grill in it when I bought it. Never liked the original HR grill and still don't. Car is definitely not standard but that's what we did in the 80's, everyone modified their cars. All good clean fun

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I was hoping for 250 to 300 but am told with the Jzed head more can be achieved. Especially with a std bore. 235 is a grafted Ford crank isn't it? Not sure I trust a welded crank with that much power. I am in discussions with my engine builder so will add more info about all the planned parts combos later. Was planning a beefed up VN 4 speed auto which gives me overdrive. But still like the idea of a 5 speed Supra box if they can handle the power

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Good luck locating one these days. They are around but rare and the knowledge to make is fast disappearing.

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Phil
2570

supra box should be fine im thinking.. consider a turbo? pretty easy to get a 202 putting out some good hp. a mate had one years ago and it was a serious weapon (in a hr as well). he used a rayjay turbo from the us and big SU carb. forged pistons and xu1 rods. opened up a std 202 head for xu1 valves. used a aussie 4 sp and a 2.78 diff. he was gentle on the box....

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Aussie 4 speed too weak for any real power. Lots of good stories about the Supra 5 speeds behind a 202. I have a Trimatic in it now, too tame. When I first bought it there was the std Powerglide in it, was a bit limited but could get 60-70mph out of first! Fancy a manual, more fun to drive and I wont be driving it daily. Weekend cruise in mind

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235 stroker uses a holden crank for the front and rear, and the 221 ford crank for the rest.

i enquired with my crank bloke about this for a guy just the other month, from memory it was going to be up towards $1500-1800 or so labour plus the cost to purchase the cranks.

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Thanks for the info, much appreciated. Will discuss with my engine builder if it's worth the money or not. It's not a race engine I am building. Just the fastest street engine I can get for my money.

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The crank is one thing, then you have all the machine work to make it all fit. With my stroker we had to chamfer all the rods, scallop the cam, clearance the block, modify the sump and buy custom Pistons for it all to work.

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Pro-stroke make kits for 235. Google them.

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Just put a v8 in it. I have been down the road you are on. Still not the same as a v8.

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would be the go in a Harry Roberts....light weight good power, sound superb...

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Leyland V8 is a good fit in early Holden.
The P76 V8 is 7kg lighter than a red six and will drop straight into an EH enigine bay without any modification except engine mounts and a Torana front rack and a remote oil filter (easily fitted kit).
The engineer who was passing mine was and ex-Leyland engineer. He said the stock P76 V8 would pull 5,500 easily with my gearing in a car as light as as an EH. With my five speed box (.75 fifth gear) and 2.78 diff he said that was 155mph. I still wish I hadn't sold it before I finished it.
It's a very old school motor today, but as adj said, they sound superb. I saw my V8 wagon for sale 10 years ago, if I saw it again I'd be drawing on my super.
David

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Settle down, that's a bit exotic. LS1 alloy v8. Cheap and easy to get good parts.

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I know what every one is saying but I still like the idea of well built street six cylinder.

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Disclaimer :- The above is purely speculation and is only posted for entertainment purposes!!!

Know what you are saying about the V8. I just have a thing for the old six, there is potential for well over double their initial designed output. Like the idea of getting the max out of 50 year old block. Love the sound of a well built six. Dropping a V8 in is pretty standard these days and a 6 with a Jzed head is just too hard for me to resist.

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got you there allright, I love a hot six...just think that your building a hand grenade..."getting the max out of a 50 y/o block" for ten minutes :0...then bang! Make sure you have a good engine man building it...clearances clearances clearances...this will be a 20K six by the time its assembled...but will be stunning.

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Yes you are right. I have a very experienced company building it. Talked to a few before I decided on them. I decided to inject it for that reason. I considered Turbo & Supercharged but believe that is just too much for the old six to handle for any length of time. I am not racing it so it wont be under too much power for too long.

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Just remember there will always be a guy that pulls up beside you with a v8 that makes 350 hp easily and drives nice when your 6 is maxed out and is a pig to drive. He can add more you can't. A v8 will be cheaper to build and you can add to it. The 6 you are doing is the final stage Leave it to the racers. At the shows people will head for the v8 for the wow factor, everyone has a 6. Trust me, I have been there, done that. Good luck.

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It comes down to what a person prefers.
We've got a modified six our EH. I've had V8s.
If I had a lot of money to build another EH I'd consider going with a hot, supercharged late alloy V6 and 6 speed manual.
But with my budget I love our red six and don't care about the bloke with the faster V8.
David
David

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