25 replies to this topic

[1275 SPRITE]

Hi,

I have been asked by a friend to see if anyone would be interested in a swiftune full race engine that he has.

The engine was built by swiftune about 8 years ago at a cost of between 7-8 thousand pounds and was the absolute full race engine used in Brisca Mini Stox.

The engine has been standing for a few years but turns over easliy by hand and has not seized.

Ideally it would need a basic rebuild as it hasnt been started for a few years, just a simble big end and rings change woul be fine.

The spec of the engine is something like this:

850 block bored +40 to 997(I think)
12g295 full race head (big ports and valves)
Fully worked lightened, balanced, wedged, bladed x drilled and hardened crank (over £1k to do)
Lightened and balanced conrods
Uprated pistons (omegas I think)
Points distributer with custom advance to suit engine
Lightened distributer drive
Full conversion to cam belt with vernier pulleys
Modified timing covers to allow adjustment of timing without stripping anything to change for different tracks.
1.5 full roller rockers
286 cam

Race restrictions at the time limited all engines to standard 1"1/4 carb and standard manifolds, but if a bigger carb, inlet manifold and LCB were used then some descent power figures would be acheived.

The quality of the build is that good that the engine used to be raced every weekend (with regular oil changes) and used to be at the end of the straight happily at near 8,000rpm !!!

I havent posted this in the for sale section as he doesnt know a price and would like to see how much interest he has.

Thanks.

Edited by 1275 SPRITE, 17 February 2009 - 08:57 PM.

[tedmcedd]

Price?

[Racer_Pete]

Rough price? Did it ever get dyno'd?

[Sieve]

10,000 rpm, miaow!

[1275 SPRITE]

The main reason I put it on here was to see how much people think its worth and how much people would be prepared to pay???

It did get dyno'd and was producing somewhere around 35 - 40hp at the wheels, which doesnt sound much, but that was on the standard 1"1/4 carb and standard manifolds. I think it would produce some good power if set up on a bigger carb and manifolds.

[Jordie]

Your friend must have a price of what he wants in his mind? If you give a rough guide price, people can suggest if its too high or low etc.

Otherwise you get people saying ill give you £5 for it etc

Jordie

[1275 SPRITE]

Ok thanks.

Well if i said £800 what would people think?

Too high? Too low?

Thanks.

[Jordie]

personally id say high.

A standard 1275 produces more power and they are available for £100-300 in varying conditions.

You could get a 1310/1330/1380 short block or engine kit for £800.

To say it cost £8000 to build, the power figure you listed above doesnt impress me that much to be honest. But thats in my eyes, who knows what others think?

Jordie

[Mini-Mad-Craig]

These engines are Getting alot rarer now which is why they stopped using them in se7ens because of short supply of parts and spares

[1275 SPRITE]

I agree, the power figure doesnt sound much, but that is because of the carb and manifolds which were made to be left standard because the people racing them were aged between 12-16 years old.

As I said before, I think better figures could be acheived with bigger carbs and a less restrictive manifold and exhaust.

And surely the head is worth a couple of hundred on its own for a swiftune 12g295?

Edited by 1275 SPRITE, 16 February 2009 - 09:00 PM.

[tedmcedd]

yeah, i was expectng more power to be honest.. thats why i was interested...

[Retro_10s]

I don't honestly think that adding an alloy inlet and different carb will increase figures that much if they are that low in the first place... Standard 850 puts out about 30-35bhp,... those modifications should have come out with more than a 15bhp increase.

Guess it also depends on where the figures are taken, fly or wheel?

I'd suspect something more sinister like incorrect cam timing perhaps...

[1987_ParkLane]

To be honest i was offered this engine, and if my money wasn't tied up in something else, I would have probably gone for it, I prefer the different aspect with mini engines, rather than big bores and power, which is why I would have gone for it.

[Pooky]

As above, I think if you put a better cam and manifold on then get it dyno'd and see what it does and with a bit of clever marketing it'd go for loads on eBay.

I'd be interested if I hadn't just bought an engine. Love the underdog/giant killing factor

[1275 SPRITE]

I'm sure he would change the carb for a bigger one or possibly twin carbs, but he doesnt have a mini to put it in to try it.

The cam is suited to the engine, as it was the cam the engine spec was built with.

Timing is spot on, and as mentioned earlier it was altered for different tracks to suit the needs of the tracks, i.e long/short straights.

I will speak to him more about the engine as it was a while since we last spoke about it and most of the spec was off the top of my head.

I could well be wrong about the power figure as I aggree, it does seem low. I know this should be producing more from the amount of work that has been done, and I remember feeling how much the ports had been worked last time I saw the engine.