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biased99
Forums Junkie

Registered:
May 2002

Re: Corona XT130 engine conversion ideas

Mon, 20 October 2003 05:11

hemi twofifteen turbo wrote on Mon, 20 October 2003 11:39

Sorry my weight figures were wrong for the corona.
My g/f had a 1980 wagon and i think it was 950kg or 1050kg not sure.. Did i quick search and found 1050kg came up a few times..
The commodores are around 1350kg. (depening on model)
So about 200kg, which does make a fair bit of a differance...
And considering the diff ratio advantage of 4.11 gears rather
the the commodores stadard 3.08:1 or less likely but not uncommon 2.78:1.

Ripped from a site:
Fuel system:Twin barrel Bendix Stromberg carburettor
Displacement:253 ci (4149.2 cc)
Power output (DIN):185 bhp (138 kW) at 4400 rpm
Torque (DIN):262 lb/ft (353.7 Nm) at 2400
Compression ratio:9:1

1050Kg + 185hp + 4.11 gears = Fun!

If you put a decent exhuast and carby you'd get 150kw faily easy.
Getting a 'half cut' of a commodore would be intersting Wink

I think a 'full cut' would be more common and cost about $500-$1000
If you get a 308cu, externally identical to a 253cu, they make 179kw (240HP) in standard form, (HQ-HJ Kingswood)
A 'full cut' kingswood wont cost you much either!! Smile

Would be intersting, One thing that could be a problem is the sump clearance, but there are a few different holden sumps you could try out that would probably work.

With respect, I think you're quoting early 70's figures under the old system (DIN, I think). Under a more relatively comparitive system, (SAE Net, I think), you'll find the power ratings considerably lower...

For example, the following figures come from the owners manual (which both of the 253 Commodore SL/Es I owned had).
253 V8 (Single exhaust) = 100KW (Can't remember torque)
253 V8 (Dual exhaust) = 115KW
308 V8 (Dual exhaust standard) = 122KW

Note that these figures are for the "pollution motors", where all ran the 4-barrel quadrajet carby.

For comparison's sake, the first injected 308s (304s, actually) in the VNs wee rated at 165KW stock, compared to the carbied engines they replaced (in the VL) at 122KW...Perhaps a wrecked 304 VN may even be a place to start, should you wish to go that route...Of course, if you're going to that trouble, there are probably better options.

I spoke to GMH some years ago, interested in trying to extract the rumoured 157KW from the 253 that Holden claimed for the Brock VH Group 3s...The bloke told me "Don't bother, those engines had a LOT of work done to them (Blueprint/balance, better internals etc etc), and the readings were "optimistic".

As Norbie said, the weight alone would make the conversion only marginally better than stock - certainly not value for money, compared to some of the Toyota engines floating around.

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