12 replies to this topic

[adam_93rio]

Think I've got a hole in my radiator so while it's out I was going to change all the old rubber hoses to silicone ones
Thing is, I'm not sure which set to get, can anyone link me to the correct set for a 1993 carb model (1275 obviously)
The two sets either say "pre 1990" or "mpi/ spi" my car is neither of these.

Whenever I give my reg to parts places they send me spi parts and it's a ball ache most of the time, I just don't want to order a set and have to mess about trying to send them back if they are wrong

Also, it's a black set I'm after. And the heater should be plumbed from the radiator hose, not the head

[andyteethyea]

Sorry to hijack but whats the advantage of silicone to rubber appret from looking better is it just they last longer?

[adam_93rio]

Sorry to hijack but whats the advantage of silicone to rubber appret from looking better is it just they last longer?

Longer lasting, basically last forever. They don't degrade the way that runner does, and they're more flexible which makes them easier to fit.

I actually prefer the matte look of rubber hoses to the shiney silicone ones, but the advantages outweigh the aesthetics

[andyteethyea]

Probs worth picking some up at some point along with the blue rocker cover t bars and ht leads

Edited by andyteethyea, 25 December 2014 - 12:20 AM.

[adam_93rio]

I've just ordered a fletcher twin core aluminium radiator, after walking out onto the drive this morning and realising the mini loess water when it's just sat still too

Edited by adam_93rio, 25 December 2014 - 01:10 PM.

[cal844]

Id advise to buy the Spi hose kit, my 1993 car is the same, everything spi but has a carb from factory

[adam_93rio]

The spi kit has another pipe coming from the bottom of the radiator that goes diagonal and I don't know what that's for. My car never had that

[AVV IT]

There isn't a silicone kit for the HIF38 carb 1275 models. The issue is that the bottom hose is different on those models, as it has a slightly longer heater circuit take off than a standard hose, plus the heater take off is also a slightly larger 5/8" bore. As suggested above, you could use the Spi hose, but that has an extra take off on the heater take off which you would either need to blank off somehow, or utilise to plumb in a heated manifold.

The other option is to use a standard bottom hose instead. The heater circuit take off will be slightly narrower on the standard bottom hose (1/2" diameter), but this can be joined to the slightly larger bore heater circuit, using a 5/8"-1/2" reducer union http://www.minispare...Back to search. You'll also need a short length of 5/8" heater hose to use as an extension piece, as the heater circuit take off is slightly shorter on the standard bottom hose too. If you're planning on changing your heater hoses for the silicone version as well, then you won't need an adapter/reducer or a short extension piece. Silicon heater hoses are 13mm diameter (appx 1/2") anyway, so you shouldn't have any issue joining them to the 1/2" take off on the bottom hose. The only issue you'll then have is fitting the 13mm (1/2") hoses over the 5/8" outlets on the heater matrix, you can get them to fit with a bit of persuasion though.

[adam_93rio]

Thanks for the helpful reply. I can't believe how hard it is to get parts, it's like they don't know my car exhausts with most things.
I think I'll stick with a standard rubber set of hoses to be honest, I was only going silicone because it'll be less messing about because they last longer. It's just gonna be messing about trying to bodge a system together instead

[AVV IT]

Fair enough, but when you come to need a replacement, you'll probably find it near impossible to even find a standard rubber bottom hose for a 91-93 carb model (part no: GRH-1289), as they're now pretty much obsolete. The problem is that particular hose was fitted to so few cars, that it's just not worthwhile for a manufacturer to now produce another batch of them, particularly when a standard, or Spi bottom hose can be so easily adapted. I spent ages looking for one, I went to all the usual suppliers, and even went to the hose manufacturers themselves directly, but dispite having one on back order for months, I never actually managed to source one.

I went for a silicon standard bottom hose in the end and also changed the heater hoses too, so there was no need for unsightly extra lengths of hose, or reducer unions. I also managed to source a decent used rubber GRH-1289 bottom hose, that I now don't need, so if you ever get stuck for one, then give me a yell.

[adam_93rio]

Fair enough, but when you come to need a replacement, you'll probably find it near impossible to even find a standard rubber bottom hose for a 91-93 carb model (part no: GRH-1289), as they're now pretty much obsolete. The problem is that particular hose was fitted to so few cars, that it's just not worthwhile for a manufacturer to now produce another batch of them, particularly when a standard, or Spi bottom hose can be so easily adapted. I spent ages looking for one, I went to all the usual suppliers, and even went to the hose manufacturers themselves directly, but dispite having one on back order for months, I never actually managed to source one.

I went for a silicon standard bottom hose in the end and also changed the heater hoses too, so there was no need for unsightly extra lengths of hose, or reducer unions. I also managed to source a decent used rubber GRH-1289 bottom hose, that I now don't need, so if you ever get stuck for one, then give me a yell.

I know it's been a while but I could do with reviving this just to be sure.

So is it this kit you would get? This replaces the heater hoses too which I can push onto the heaters slightly larger pipes. So buying this kit should work?
I'd just have to cut a heater hose to allow me to put the inline heater tap in, but to be honest I might just leave that off as it's always left open anyway and I use the fresh air vents if it's hot.

So this kit with a 1/2" joining piece to join the bottom hose and heater hose together?

http://www.minispare...px|Back to shop

[AVV IT]

Yup, that's what I have on my 93 carb model (all be it in blue).

[adam_93rio]

There's something I don't like about the blue kits, maybe that I've spent so much on the engine itself that I don't want to distract the attention from it haha
I'll get that one ordered then, thanks again for the help!