2" SUs...

280zx lump £150-£200,nicely ported not to lary cam yer normal 240 carbs will be enough cos i have the kns for sale that you can buy off me,GDs system is a good one to go with,i now have a nismo header mated with the rest of my GDS,but i dont have a normal zed its a 3.1.skyline LSD brakes to match and a few other things to go with it,it also pushes about 260bhp at the wheels so if you dont want to spend loadsa dosh keep it simple
 
Russ, I have 2" SUs on a modified engine (now 2.8 + lots more). Mine are off a Rover TC.

IMHO I don't think you need 2" carbs yet. The historic racing boys had to go back to 1.75" and apparently they didn't notice a big difference from 2" (they are limited to 2.4ltrs of course).

If you go to 2" you should get the inlet manifold 'opened-up' to match.

Cheers Rob.
 
Grolls :) Another car another day that one.

Thanks for all the ideas guys, like Status said I don't want to spend too much (as there are more important things to spend it on, like a driveshaft, brake servo etc), but I don't want to put the engine back in and then think "wish I'd done that".

I was thinking of the 2" SUs only because a) I maybe able to get some fairly cheap and b) I'm going to spend time setting up my 1.75s and cleaning them, if in 6 months I change them I will have wasted a load of time.

Basically I don't like doing things twice :)

Status: 260bhp at the wheels, that'd do me lol, need a few more cc for that though.

Oh, what to do! So much choice :D

Thanks
 
Cam needs the head worked, and vice versa I'm afraid. Each will give a bit of a benefit in isolation, but both together = greater than sum of parts.
 
Yeh I'll probably need to replace the whole valvetrain :(

I'll see if my classifieds ad turns up anyhting, if not I may stay stock apart from exhaust.

Thanks Tony
 
Russ: Stick with the standard SU's. They are perfectly adequate for a mildly tuned engine and can even be made to work with a relatively high spec engine. Remember if you change the cam you should also change the rockers and lash pads but as has been said before this only becomes worthwile if the engine breathing is improved, ie head and exhaust. Get your carbs right, fit a 280zx dizzy [ if you can get one ] and then take stock of what you want to achieve within your budget. Incidentally, if you have the flange type gearbox there are 2, possibly 3 lengths of propshafts, two of which I have for sale. What year is your car?
 
Well my car is a 1973, but I couldn't tell you what gearbox I have. I believe I still have the original R180 though. My gearbox is on my garage floor so if there is any way you can help me idenfify which it is that'd be great.

Have been chatting to George some, and I think the first plan is to get the engine LOOKING pretty, get it running as good as possible, get the car on the road and to Z events, then see what I want to do, I can take the engine out again easily if I have to.

It has been informative though, hopefully this thread will be of use in the future.
 
I think the first plan is to get the engine LOOKING pretty, get it running as good as possible, get the car on the road and to Z events, then see what I want to do, I can take the engine out again easily if I have to.
Click to expand...

Russ, that IS the plan. Dont THINK about it. Just do it.
Stop wasting time ,effort and money on half baked ideas and listening to 20 different ideas on what you could do.
Just clean and refurbish what you have got, source the few missing parts and get it MOTd and on the road, spending as little money as possible.
Speak to me off forum and we can get the bits you are missing sourced, cheaply.
Just put the gearbox back in whatever it is. Its probably OK, for now at least.
Same with the carbs,clean em up and refit,they might be OK as they are.If not then its time to look at other options.
 
Yeh I'm with you pmac. That IS the plan now.

That git in Scotland has many of my parts, apparently they are in the post but he doesn't have any tracking (sounds likely! :( ), but I think they are going on his LHD conversion car as we speak, I wouldn't recommend anyone buy it.

I will list the missing parts and get back to you, then I'll bring the van to Notts :)
 
That git in Scotland has many of my parts,
Click to expand...
Minor annoyance only. You got the main bit and it was a good deal for you.
Forget it and focus on getting the car up and running.
Its taken ages to get you to the stage of actually owning a car. I aint givin up on you for the sake of a few stock bits like a prop and a bonnet hinge spring set.
There are still plenty of parts at my place and if I aint got it then I certainly know where to go(off forum source) to find wot U need.:)
But just to keep you focussed here is a list of bits you DONT NEED(at the mo):eek:
2" SUs
triple carbs
fancy(expensive)cams, heads valves etc.
Exotic brakes
Carbon fibre anything.
big wheels +expensive tyres
Electronic dizzi.
Anything at all from US.
Any more gearboxes.
ETC
 
LMAO true, I know where he lives so next time I'm in the B52 and fancy some carpet bombing practice I'll know where to head ;)

My new problem is the bloody flywheel is stuck on lol. No amount of impact driving or trying to hold the flywheel and jump on a long bar has worked thus far.

The good thing about missing lots of parts is I wasn't tempted to drive it, which was good because things are only finger tight at best, or missing (like the circlip for the pin that goes through the gearstick) lol.

Thanks pmac.
 
Ok these trumpets for my SUs, 1.5" or 3"? I know that your trumpets are supposed to be matched to your carbs so I guess it'll make a difference, but is there enough clearance for 3"?

Thanks :)

And Qunvat, you were right, ones from the XK120.
 
Russ said:
Ok these trumpets for my SUs, 1.5" or 3"? I know that your trumpets are supposed to be matched to your carbs so I guess it'll make a difference, but is there enough clearance for 3"?

Thanks :)

And Qunvat, you were right, ones from the XK120.
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...all depends on the clearance in the air filter...IF youre using any!...gotta be 30mm if you are...like i said...you need the 67mm K un N's IF you buy the 1 1/2" rampipes like i did.....the 3" ones are too long.

Si
 
Cheers Si, I am going to measure the size of the trumpet in the stock air filter, I'm sure Nissan spent a lot of time figuring it, from memory they are definately shorter than 3".

I'll certainly be using the K&Ns and as you said there wont be room for the 3".

Off to eBay now to buy, thanks for your help.
 
no probs.....i spent a few months sourcing these correct rampipes....they're most def the correct ones...makes a difference for sure. (not a HUGE one though!)....any probs you get with your SU's i've found a lot of stuff on 'net.

Si
 
Thanks :) I have a book on SUs coming for christmas as well so hopefully I can get a bit of an idea, but nothing like experience and the book can't tell you everything :)
 
Russ,
beware of Rover 2" SUs, some were made to look like 2" but were in fact 1.75" !

Pmac is right, get the car running and enjoy it, then see what you want from her !

Status - dream on boyo, 260 at the wheels.....220 more like :) !
 
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