classic mini exhaust

[bmw2101]

the standard pee shooter exhaust, not sure what size it is, but will that be ok for 50 bhp and with the cast manifold?

want the car to look more starndard now, but i have some light mods to it. Slightly ported head, maybe the mini spares evo001 cam, and lada mono injection ...

thanks

[Ryannn]

A standard 1275 mini has anywhere from 50/70bhp and they had the cast manifold and small exhaust, should be okay.

[bmw2101]

someone has just told me to use a metro one that has the 2 outlets on the manifold, aparently they are the ones to use? Is that whats on the 1275 also?

[skkylinedave]

TBH i would just buy a stage 1 tuning kit form minispares . New unlet and exhaust manifolds , RC40 exhaust which looks virtually standard apart form a shiny end and just sounds a little nicer , not noisy at all . As well as new carburettor needle and new air filter .

Probably the best thing you can ever do for £200 to a mini . Really makes a difference on a 998 if thats what you have .

If you want it to look more standard you could get a k&n element for the standard airbox .

www.minispares.com/product/Classic/Exhaust_and_manifold/Performance%20kits/C-STN17.aspx?1104&ReturnUrl=/search/classic/stage%201%20kit.aspx|Back%20to%20search

[legend]

rc40 and a LCB manifold, makes it sound great

[legend]

actually don't spend any money on a 998, look for a 1275,

[bmw2101]

i have one, its a 1293, massive head, but i don't want to put it in the car just yet.

Ive got the 998 overbored, and the bits to rebuild it. Ill probably use a rc40 on the car, there was an exhaust that came with it but its far too loud.



Ive got the induction sorted, its a lada niva mono point injection unit, that ill mount to the spi inlet, then ive got speeduino seafox to wire into it all. should be ok.

[nickwheeler]

Oct 19, 2020 11:33:42 GMT legend said:

actually don't spend any money on a 998, look for a 1275,

Have you seen how much a 1275 is today? Rather more than the £65(installed) that we did to my sister's Mini. 29 years ago.....

Considering just how curse word the A-series is, the stage 1 kit mentioned makes a worthwhile difference to a 998 for very little money, especially if the car needs a new exhaust 

[bmw2101]

that is why my 1293 is sitting there doing nothing. Ive got the 998 sorted, and if i want more power i have all the bits to turbo it. They are still like £150-200 for a good one

[legend]

best one i ever build was based on a turbo engine i found in a puddle in the scrap yard, gave the guy £18 and that included 2 super minifins i found on the front of a clubman?? and i haggled him down as it was "in a puddle" it'll need a rebuild etc

the oil that was still in it was yellow, lovely engine

[legend]

but still, keep an eye on gumtree, or just give up and fit a micra 1275 16v super reliable engine

[mrbounce]

Oct 11, 2020 10:15:41 GMT bmw2101 said:

someone has just told me to use a metro one that has the 2 outlets on the manifold, aparently they are the ones to use? Is that whats on the 1275 also?

The standard pea shooter is a single pipe - you'd need to get a separate pipe (available from Maniflow/Mini Spares) but then you'd be looking at needing a performance exhaust anyway. The standard pea shooter would most likely not be beneficial to a 1275 engine anyway. There's a reason why the original GT only had 55bhp. It was strangled half to death. I would be looking to get an RC40 or Maniflow system. Much better breathing and not much more noise. There's really no benefit to keeping the pea-shooter. I hated mine and couldn't wait to get rid of it... 

[bmw2101]

oh my engine is a 998.. [+20!]

i think ill go for a rc40 and just itll be good. My engine isnt about the power, its about how well it drives. I had a word with the guy who will map it today, from looking at my speeduino and saying he would not even take it into his rolling road workshop [lol] to looking at it and saying it was ok, and looking at the mono injection from the lada, he was quite positive on the results.

998 will be nice to drive i think.

[ChasR]

1275s as said now go for much stronger money. Aren't they closer to £1k these days? But then, Beetle 1600 engines have followed suit as well.

This means that tuning the 998cc isn't a bad idea.

As said, for the effort it will cost to buy some parts with spares prices firming up, I'd just go for a new Minispares Stage 1 kit, which comprises of:

-Intake manifold
-Needle (I think)
-RC40 exhaust
-Long Centre Branch Exhaust manifold/header (aka LCB)
-Air filter ; Due to the cooling effect of a carb, IMHO, any K&N will be fine. This is assuming the water line has been disconnected from the intake manifold.

However, many feel that most LCBs are too large for a 998 bore wise, with the exhaust length also affecting things. While I can agree on the bore size, the tuning on many other engines (albeit V8s) seems to dictate that long tubes will always make more power over a short one, and other engines seem to follow that. As the 998 engine is smaller, the LCBs are closer to the

With that in mind I'd suggest either a small-bore LCB, or the Cooper Freeflow manifold. Both are available from Maniflow, as is their version of the RC40.

Remember that the above setup will need a heatshield in between the carb and the exhaust manifold, or the exhaust manifold wrapping to avoid power loss and fuel boiling issues.

I'd also look into the ignition system. Most Mini will be tired now here, and a new dizzy will make the engine feel more sprightly anyway. That in mind I'd do the following

-Electronically triggered Dizzy ; These are available from everywhere for sensible money now.
-123 Dizzy ; Pricey, but a very decent bit of kit and with no wear/seizing issues on the dizzy weights, as that's fully electronic. It also looks factory and is very easy to install.
-Nodiz/Megajolt ; More DIY out of all of the solutions, but offers all of the benefits of the Bluetooth 123 Dizzy above.

When I was looking 5 years ago, there wasn't alot of difference in price between going new and secondhand, especially when you considered the time and fuel cost aspect of secondhand. A local guy wanted £100 for a secondhand RC40 and Metro Manifold, where I'd still need a needle, and an LCB. A shame to go new but that's life I guess.

[slater]

Ita a bit of the myth that 1275s are massive money. Yeh they cost a bit more thana 998 (which are essentially worthless so that's not hard) but you will get a good runner for 500 or one for rebuild for 250. It's not much for what you gain from the extra cc.

[ChasR]

Oct 21, 2020 18:28:10 GMT slater said:

Ita a bit of the myth that 1275s are massive money. Yeh they cost a bit more thana 998 (which are essentially worthless so that's not hard) but you will get a good runner for 500 or one for rebuild for 250. It's not much for what you gain from the extra cc.

Maybe in the trade. We can all get things for less on cash deals.

For the average chap in the street, it seems they are at least £500 with £700(ish) looking to be normal. I'll admit it's less than I thought.

www.ebay.co.uk/sch/33615/i.html?_from=R40&_nkw=1275+engine&LH_Sold=1&LH_Complete=1

[slater]

I regually buy them off ebay for those prices. I must have 10 or more in stock now. Some go for silly money but theres lots of silly people about, just ignore those.

[legend]

even a well built 1275 will get destroyed by modern cars, but they are still great fun

1275s did 60 in 11s when new, an 850 did 60 in 26s...26s whaaaat!