Well tuned TopGear styled a12et, prepped rods, vitara slugs,
arp top, MLS Head gasket and bottom with latest h2o/meth inj.
will be very reliable, powerful not to mention cheaper.

But he doesnt want turbo so thats that.

Add the labour for sr20 conversion, maddsport kit
good headers, ecu mods, cams, solid lifters, gaskets
and slight porting he should be up for 5-7 grand.

SRxxVE is cheaper full mech head - best SR of all time.

Something different would be the post 2007 QR25de engine
with SR20DE crank custom rods, JW headers, JW flywheel,
springs & JW chip then you get QR23DE with 200+hp 9000rpm.

How much is the setup worth? As much as 2 blokes are willing to haggle over it is the short answer. $2500 certainly seems a fair price but the truth is that it is a used engine that has had a hard time. Mazda pistons means a decked block and the bore is probably on it's last legs so a combination like this usually means they get built once. Maybe re reinged once. So broken down at least seperating the motor from box is the wisest way to sell.

As for the cost of setup. I would reccommend to maybe find another member to help with at least the motor setup and get it mostly ready for the wiring etc. Do all the stuff yoursef that you can do easily. As most mechanics will charge you a small fortune to do the jof from start to finish reguardless of how many off the shelf parts you have to do the job. I would expect to pay at least $3K <> $5K if I had the motor in to hand it over and let someone else take care of tailshafts and wiring and the fuel system side of things. Do as much as you can yourself. You'll feel much more confident about the end result anyway if you do.

And also. It is very easy to ask what it's worth. Most will say it's worth way more than what they themselves are willing to pay for it.

If you sell do a wet and dry hot and cold compression test on it first. Honest results will ensure an honest buyer.

Sounds like your after NA hp so i guess my opinion won't count as much.There is always going to be a car/engine with more hp/torque than what one has.And even after you achieve targeted power, you will want more.and thats where turbo will seem as the most value for money.So maybe ca18det would be your best option in the long run.

That said, i would advise you to A12 it as it originally came out with it and live it NA simply for the fun/enjoyment factor.Or any A series engine will do.Spend all the costs of installing the sr20 on modifying/upgrading the a12engine and its drive terrain,56a 5speed,nismo lsd etc.. will end up costing more but will also be more rare n still really old school.

You keep the old school factor and in the future i doubt there will be many a12 NA powered dattos with the current trend...

i.e running such an a12 setup,great idle and sounds good.

http://www.youtube.com/watch?v=mEx5yrDCAno&feature=related

and the worth of your engine based on opinions is really based on opinions and everyone has a different one.As some have said and tried to sell worked a series engines on this forum, some see the value and others don't.some will question why pay 1500 for a modified a12gx head when i can buy a ca18det etc etc.... and others will buy the gx head no questions asked.

What are your plans for the car?

Cheers

and if your after an all out NA 4 cylinder engine, you can't go past the f20c engine from the honda s2000. You could land an Engine with loom,ecu and 6 speed gearbox from japan to oz (melbourne) for aud$5000k. 250bhp stock. but then the costs of custom mounts, modifing gearbox tunnel,suspension and brakes,diff etc etc

If you don't have the skills to put an SR20DE in your car you definitely don't have the skills to turbo your A12 including different pistons, prepped rods and this and that.
I would expect the turbo A12 path to be a long, time consuming and expensive one to get it to reliably make more power than an SR20.
I would go SR20. unless it was for a race car and weight was an issue.

Im over my CA convo, so its worth a swap for my det, rebuilt r30 5 speed, haltech, pumps etc :) I going A series again, never should have gone away from that idea to begin with.

honda s2000 motor weighs 3kg heavier than a buick/rover v8.
They are a very heavy motor and tall too boot.

A QR23DE is better by been 40kgs lighter.
QR23DE = qr25de block, custom rods, modded sr20de crank.

Hey D,

Im assuming the qr23de is a 2.3liter?

Hondas s2000 engine would comply with the 2.0liter NA requirement for engineering in a 1200.I don't think there is an engine that can compete with the f20c hp/liter under 2000cc.Yes its heavy but with engines producing 250bhp at the rear wheels when modified is no easy feat.Regardless of how heavy the engine is ,if going to a lighter car like the 1200, im pretty sure they would give most ca18det 1200s a run for their money if most likely not beat them.

Ive seen many modified integra type rs / civics with na motors keep up and some often beat turbo cars .A modified f20c in a 1200 coupe with the right suspension setup to support its weight,would be extremely quick.

Cheers

Not to mention the S2000 gearbox is 50kg+ also.
Still too heavy and expensive.
CA18DET is lighter, cheaper, smaller compact and more hp
for same price of initial S2000 purchase.

Here is a good buy if you can test it as it has all
the goodies just need headers, box, cpu.
Its just limited by the throttle bodies should make
another 25-50hp with 48mm quads and sr20ve cams.

http://my105.com/ListingDetails/tabid ... 5477/id/5233/Default.aspx

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