Fastest street driven A series?
Turbo Mini Forums

On 21st Jul, 2020 steve1275 said:
Went to the Pod yesterday with the slicks swopped for 888s, so sort of street tyre, and ran a best of 11.9/114 and 1.7 60ft. Well pleased.

Yes i moved to the darkside

Instagram @jdm_brett

Cheers Brett, yes I gather it will be next year before the Simon beast is revealed

'Where does the engine go?'

Latest dyno results gave 215 bhp, then 277 bhp with NOS, and 288 lbf. ft. torque. Power held up well beyond 6500 although peak was 6100. I'm using an Avonbar PH1 cam supplied by Ian Hargreaves and although it loses some low speed grunt it does exactly what want on the strip, running between 4 and 7000 revs

'Where does the engine go?'

well done steve ...what boost ?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Well in mate 👌👌👌

Always pushing forward 🤘😎🤘

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Boost was around 20/21 psi. When I tried a bit more the dump valve started leaking, now have a stronger spring on the way. Hopefully with that installed I can tweak the boost to about 23 and hit the magic 300 bhp. Don't think the transmission will take any more.

'Where does the engine go?'

Have you considered not running a dump valve steve ?

The theory being , if you change gear fast enough the back flow is not enough to kill the compressor , and the wheel speed on the turbo will not drop ,and so you get a big jump in torque on the next gear ...

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Interesting theory Robert, could it damage the turbo if I shift too slowly? My shifting is not the best, combination of old age and excess of mechanical sympathy..

Edited by steve1275 on 10th Jun, 2021.

'Where does the engine go?'

i am not sure .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Practice your gearchanging Steve !!
Robert, I was past your house on Sunday on my way to Pinnocks farm to view an MG Midget but was not sure if you were here or across the pond

Practice your gearchanging Steve !!
Robert, I was past your house on Sunday on my way to Pinnocks farm to view an MG Midget but was not sure if you were here or across the pond

yup i am here !

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

So back to the Pod yesterday, managed a new PB 11.85 @ 114.7, off a 1.71 60 ft. Car felt good, but there is more to come, as i need to launch the car better. I moved the intake temp sensor to the engine side of the NOS injector, previously I saw 60C , now 20C, significant cooling effect.

'Where does the engine go?'

excellent well done steve .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

I bet it was a little toasty in the nomex! Great result, congratulations.

Edited by e5tus on 20th Jul, 2021.

Superb!

Phil.

WWW.TURBO-MINI.COM

Thanks guys, and yes it was a little toasty at times. I picked up a high speed misfire which I suspect was heat related.

'Where does the engine go?'

So a stronger dump valve spring resulted in more power, and I practiced gear changing as instructed. Went back to the Pod yesterday and ran 11.78 at 115.3, so well pleased with that.

'Where does the engine go?'

Hmm, took the head off and found this. Bit of detonation in no 1 methinks. Although I've been running higher boost this year I'm also using MS109 race fuel, and if the det was happening all the time I feel the damage would be worse. However I did run out of fuel half way up the strip once, and also did a couple of runs on pump fuel. The ali scraped off the bore quite easily, and although I can see scuffing on the top land, the ring appears to be OK. Thoughts?

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'Where does the engine go?'

melted piston, too lean

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

Do you think that was caused by the car leaning out when I ran out of fuel? Normal AEM reading is around 12 on the strip.

'Where does the engine go?'

So, back to the Pod last Monday, lovely day for it, ran 11.72 at 115.66 off a 1.68 60ft. Dump valve ok now I've realised that the MS109 fuel gets into it when i'm using NOS and this caused big wear and sticking of the piston if not cleaned out. I flush the rest of the system anyway.

'Where does the engine go?'