What power/trap speed etc. are you chasing? If you're going hard then it might balance out to just buy a holley and fab up a manifold (still need to fix ignition though) since you'd basically have to completely replace the EFI system anyway, if you're not going sub 12 second just slap some bigger injectors in it and get it nistuned. Also, what were your plans for tuning? DIY or taking it to a shop?
Starting on the wrong foot because of what you have on hand versus economical options might be a mistake. I like the idea of a "mini" V8 in a mini, a 253 would be cool. Look around at cheap donor car options, the beauty of a donor car is you will have a complete drive line to butcher, mounts, exhaust, starter loom etc etc. Maybe sell swap some of the VG30 stuff to finance it.
Not dragging it. the club has a burnout pad for fund raising. but we are looking a building a car with a difference. the motor will be installed in a old model mini. It will be done properly and not just slapped together. Burnouts are not my thing but doing projects with a difference are. hence why the motor will need to hold high rpm for a number of minutes.
Part this out, the GTS stuff, bull bar, spot lights etc you would go close to getting your money back. Although the spot lights would look cool on the roof of a mini oscillating in clouds of smoke. http://www.carsales.com.au/private/details/Holden-Kingswood-1976/SSE-AD-3221025/?Cr=0
yep that was my other avenue, maybe a 253 supercharged, would look cool as well. Thats what it is wall about a bit of a show piece with a difference. Its not about winning anything just a bit of club promo. I do have a 235 in a ute chassis that I have been building but I don't really want to use that. The advice has been great on here. I thought the vg30 path might be great for a difference but I think that it may be a technical nightmare.
Just having a look and there is a low compression version of the 253 that would lend itself to turbo charging a blow through carby. 253 Engine Prefix: Holden 253 V8: Low compression: QS Holden 253 V8: High compression: QR
You were looking at the twin turbo engine right? What tyres do you want to fry? A standard TT is pretty pokey, I would expect a straight transplant into a mini would be a good smoke show. That said one of the big problems with the Z32/VG30de[tt] in engine conversions using either is that they're rear sumped so fitment is tricky in most cars.
lol a 253 is a terrible idea. its the same physical size as a 350, so why use it? you would be purposely disadvantaging yourself. there is absolutely no reason to use a 253 unless there are cc restrictions in the class you race. if you want a light fairly compact v8 then a rover/leyland v8 would be the choice, but takes alot of money to make power. If you want a physically small v8 then use a 289 or 302windsor ford because they are the smallest of the ford or chevy v8s. they can rev well too but must be built right. none of these motors will like being help at max rpm for minutes in stock form.
Although the old single cam vgs do have potential too if you're will to splash some cash. [yt]QuC9E3H6FH8[/yt]
also, you are going about this all wrong, the fact that you need to rev the shit out of it doesnt infuence the choice of efi or carbs. When choosing a motor for a swap you need to decide on these things Budget Class restrictions if raced physical size power goals high rpm or low down torque. weight. EFI or carb would basically come down to budget for me , for soemone who knows nothing about efi then maybe just stick to carbs, but choose a motor accordingly, dont spend heaps of your budget and time doing a one off carb install to a motor that is not designed for it when off the shelf kits exist for similar engines.
I don't think anything is going to be stock, everyone gets a bit cranky when oil goes everywhere. I guess cost of parts etc will guide a bit as to which motor is used. although we buy what is needed, everything has budget. Gmh motors and parts a very cheap, I know there is a reason for that. but not to many people will give a chev motor away.
Ok I guess my biggest deterrent against the efi and particularly that on the 300zx is that there is nobody to do a proper tune for 350 kilometres.
For me that would be decision made, run something else that has carby manifolds available. If you don't mind trailering it and two days out of town though once an EFI system is tuned it doesn't need fixing or tweaking unless you make a significant change to the setup or you really want to squeeze every last bit of power out of it, or if it wasn't tuned very well to start with. The real benefit of EFI is that you're directly controlling the important parameters so outside influence is less important so long as it was accounted for in the original tune.
