How much abuse can an a series turbo take.
Turbo Mini Forums

My mind is wandering again, am just wandering how much abuse a 5 port turbo motor can take and obviously power limit.

Idealy id like to know from people who have rather than think it will ??.
I no most of you have been on the rollers and strip and genaral blast on the road ,but who has put one through its paces on the track.

I do remember (i think cantello) raced the extreme mighty minis but dont no anything about it.

Rick

Edited by cossierick on 3rd Feb, 2010.

mine did 1800 miles before the bottom end went as yet cause unknown

I think Jon Flan or Jimbo are the ones to ask

I seriously doubt it!

Mike C used 3 engines in 5 races to the best of my knowledge then gave it up as a bad job. Some say............. it was the user rather than the application!

On 5th Sep, 2011 Vegard said:
I stand corrected. You should know

i think this is a great question as it ties in with the potential of the motor!

for example there are chaps getting reliable 750-800bhp out of dragstrip vw boxer engines

so my sort-of inexperianced point is

if we know the abuse it can handle it gives an aim of the more extreme potential

dont mean it to be off topic-ish

anyhoo peace out /

Edited by clubminiflip on 31st Jan, 2010.

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

800 bhp ftom a VW boxer and reliable ?
I want one.
Does reliable mean it usually lasts over 10 secs ?

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

yep reliable! & non turbo's they are getting 400bhp

they usually last the season of drag racing

i know a chap local to me that is getting 1/4mile times in the 15 second reigion from a 2.0 aircooled with webers so i think there has gotta be more potential with out watercooled turbo motors

what ya recon, they should stand more abuse!

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

arnt the boxers bored out to over 3 litre though?

3000cc / 1293 = 2.32

800hp / 2.32 = 350hp

so equivalent we should be seeing 350hp tops from a 1293, probably more like 320,

Matts not far of that.

you cant compare the vw boxer engines to the mini, if you want a 800 brake turbocharged 2.8 litre flat four then you can pretty much buy everything off the shelf from the likes of pauter, you can even buy specialised stronger crank cases, you cant buy lighter better made 2.6 A series blocks can you, the performance VW boxer stuff is half the cost of anything we have here for the A series

Edited by wolfie on 31st Jan, 2010.

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

15 sec with a RWD and a 2 liter engine, I hope it will do several years !!!!!

Rusty by nature

Anyway back on topic,

Rick, it depend what you call reliable, i'm sure i could run my KAD turbo for a ten race season without wrecking the lump, it would need a rebuild after each race , but thats called race engine maintianance , hopefully it would still be in one piece at the end of the ten races therefore it had been relaible,

if you keep all the temps in check and don't cook anything limits and fits remain withing tollerance and thing should last a while, new oil each meeting .

just making sure the lump is in tip top fettle for each outing ,

it fair to say keeping a 200 hp + A seies engine running reliably is going to cost you dearly in time and wonga,

trust me i know,

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

i can't add to this sorry Rick, as mines not driven hard to long distance.

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

without wanting to give my engine the kiss of death, apart from a problem with the crank thrusts, (one off, sorted now) my engine bust have done 300 hard laps on the track, and about 30 drag runs and is still going strong. So I've proven myself wrong you can have a relaible 250+bhp engine

Team Racing

My 150bhp 998 has done 4 seasons with winter checks but no rebuild. But hillclimbing is less stressful that a race of a track day.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Thanks lads that helps,

Carl, i no you did cadwell last year with us but it wasnt hard driving as you were running in.
I understand yes if it was to race it would be race maintinence wich involves alot more than a road car.

Jim, yes i suppose yours speaks a thousand words with what it has done.

I no most 5ports that are around 180/200hp seam to be toys/fast road cars, am just hoping that a track day with that sort of power will be reliable.

Rick

so jimster is proving some potential, at the end of the day 6 years ago or so when miniwilliams had 200bhp alot of people were sceptical, a=series has moved up 50bhp in that time

i dont know what matt woods is doing now but there are alot more 200bhp turbo minis now that are more than track toys

& surely alloys blocks & better cooling will improve matters in time

SKYLINES ARE LIKE CLITS, EVERY FLANGE SEEMS TO HAVE ONE: see this sticker on my silvia

the Search-section on this forum is blummin superb & simple to use, unlike some other forums, without the search-section & the help of this bunch of chaps on here i'll never be able to !!!Start the day with a 998cc turbo!!! :) i'm getting closer though!

Tom Fenton says: I have it all, make me an offer

head gaskets aside, why shouldnt the engine be reliable ?

I'd say you'd make the engine last longer than clutches or gearboxes without too much difficulty

I know mine certainly did.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

According to Vizard, the big problem is the 3 main bearings. Now, to me that is more of an RPM issue than an output issue. Big boost and not-so-big RPM should be reliable.
Jimster, how tight do you wind yours?

Caveat: I'm only running 10psi & 6400RPM. Not claiming 200+ HP experience, just looking for confirmation on a theroy.

1275 with Back Door Turbo

Team Racing

Sorry - I meant RPM.
7500 seems pretty high to me, but compared to NA race engines not so much.
Of course, it depends greatly on how much time you spend at that RPM too, how it affects the bottom end.

1275 with Back Door Turbo

The DON revs to 9200rpm, and hasn't done itself any damage to the crank/rods/bearings.