What should I do?
Turbo Mini Forums

In an argument with my dad at the moment as he has this vendetta against 1380's. He thinks that turboing mine with get me about 10 miles down the road and blow it between the Walls of 2 and 3. He thinks I'm better off selling the block and pistons and cam well basically what I won't be using when I go to turbo and doing a 1293.
Now we all know this won't happen if everything is done carefully. But my argument comes in that I'll loose money on the block and other bits when I'm sure I'll be ok with it.
This means if I go 1293 I'll have to have a line bore again and a review acid dip and so the list goes on so I know I'm getting all the reliability there.
I'm just stuck in what to do.

http://photobucket.com/quintonrose

No reason not to turbo the 1380 unless the dish in the pistons is tiny.

paint the block a different colour and tell him you got a 1293 LOL

1380!

If something is worth doing, it's worth doing half of.

Theres quite a few running 1380 turbo now and no problems whatsoever, none any different to any 1293 that i can think of.

Rick

BTW,

I did 2k miles in my 7 port 1380 turbo using two headgaskets stacked (BODGE) to get the compression ratio down, they never went between 2&3

turbo the 1380 steve and haggy have 1380's iirc and both are fast and reliable

1380!
I believe Steve's motor it 1380 and about 10 years old with now problems?

Thanks guys. Put the confidence back in me :)

http://photobucket.com/quintonrose

Bollocks, 1380's are great for quoting big numbers in the pub by kids with big egoes. Listen up, with age comes wisdom, 1293 is a tougher setup with less chance of failure. Its worth spending a little more now than a lot later! Take your dads advice

See always one. Ok please explain why's that you agree with my dad? Is it just because of the meet left between 2-3?

http://photobucket.com/quintonrose

OK, take any random component, say a rod or piston or bearing, if you had the choice of two would you choose the weak one or the strong one? I know which one I'd choose! Unless you are making a balls out race only motor which I doubt, I'd take a safer route to make my desired power output. A 1293 block will have less flex and move heat better. I'm not saying you can't build a stout 1380 but we all boil our motors eventually and you've got more chances with a 1293. You know it makes sense.

What's the difference between 1293 and 1380? About 0.080"? Is that really going to stop the block buring through between 2 and 3 on a problem engine? I believe it didn't for Shane.

This is bollocks.

There are plenty of proven 1380 turbos about.

In the 13's at last!.. Just

Theres plenty of failed ones too! I know I've got one (not built by me) Guess where it failed. 1293 for me every time, but you go ahead with your 1380 and impress every one with your big numbers

So because your engine failed you reckon that 1380's are 'weaker' than 1293? What a load of ball baggage

I think I'm right in saying that there are a fair few of the boys on here with 1380 turbos running without a problem. If your engine is going to fail it's going to fail regardless of whether your on a 1293 or 1380.

The question you should be asking is why it failed? I'm sure it wasn't down to the amount of metal between 2 & 3. More likely a failed head gasket, too much advance, not enough fuel, too much boost or a combination of all of them. As plenty of people have proven, a well spec'd and well setup 1380 will be fine.

the only reason to go for 1293 is for the capacity to overbore later, use what you have if it fits your wallet and if your really bothered source another block and pistons for a 1293 once the 1380 is up and running

are you sure its not you dad?

A 1293 is better, there can be no dicussion on this. However, that doesn't say that a 1380 won't work, as it obviously does.

There were days when 1380 na's were only special race cars and were rebuilt all the time, many people would stay at 1293 or 1330

Times have moved on and so have the quality of things.

My old man used to have a crazly tuned 1000, webber sc box etc, that high compression it had to be bumped on a morning to start.

But that was 30 years ago and was quicker than anything on the road he used to race. (obviously only cars in his vilage)

1380 turbo has been proven, and am sure you run low boost so it will very easly produce 130hp it will be miles more reliable than a tuned na 1380 trying to do the same power.

Rick

I can see I'm not going to change your minds but basic engineering theory dictates,
if you make it thinner you will make it weaker,
if you make it thinner it will make it hotter.
Its also a fact that its a weak point anyway and theres no where to go after a 1380 bore.
Finally, in my opinion, you dont need the extra displacement to build a street strip motor, there is more reliable, sensible ways to go about it. Why risk it? Any way good luck which ever way you choose but think what your dad will say if you toast your 1380!

Right,
so we all have to sleeve our bores dow to 3mm diameter!

How about ou look at the wall thickness of a 1380 compared to some of the current manufactured engines.

Exactly what Joe said!

This bloke is clearly abit of a 1380 hater and assumes that because he blew his 1380 up, we're all doomed

Right I'm sticking with the 1380. I seriously can't see there ever being a problem between 2-3 Walls. With a comp of 7.5:1 to 8:1 and controllable boost which I won't be using all the times I.e I won't want full boost I can't see if ever going. Heat? Well she's never once reached half way on the temp gauge during summer giving it run so that's another theory gone. But thanks peeps least I've just had my thoughts backed up.

http://photobucket.com/quintonrose

Damn double post

Edited by quinton on 19th Oct, 2010.

http://photobucket.com/quintonrose