Max boost
Turbo Mini Forums

With my engine spec what do you guys think is the maximum boost i should use ?

i dont have the time or the knowledge to keep replacing head gaskets or worse.

I now have a 6 position electronic boost controller so will only use max on very rare occasions

A+ Block with fresh rebore
Turbo Crank Lightened and Balanced
Standard Conrods Lightened and Balanced
New Turbo Pistons with 14cc Dish
New Morspeed 11 stud Turbo Head with 29cc Chambers
New ARP bolts used in Head and Conrods
New Phase 2 Avonbar Camshaft and Heat Treated Followers
New Alloy Vernier Pulleys, duplex chain and new tensioner
Lightened Flywheel
New Grey Diaphragm
New Paddle Clutch plate
New clutch master cylinder, new slave cylinder, new clutch arm and braided hose
New release bearing
New Straight Cut Gearbox, using a clubman gear set
New Timken Roller Bearing Straight Cut Drops
New Kad Internal Gear Linkage and Quickshift
New front mounted 10 Row Oil cooler
New KAD adjustable oil pressure regulator
T3 Turbo
Braided turbo oil feed
New Avonbar 12psi Actuator
New Avonbar Dump valve
Benross Machined Exhaust Elbow and Manifold
New Metro Turbo Downpipe, fitted with Lambda sensor
New Maniflow 2 inch Turbo Exhaust.
Rebuilt Turbo Carb, with Needle and spring for 12psi (New from Avonbar)
Large front mounted intercooler, with silicon and stainless steel pipe work
New Nic R Stainless Steel Plenum Chamber
New Fuel Pressure Regulator
New Braided Fuel Pipe throughout.
MPi Fuel Tank
New MPi Fuel Pump and Sender
Fuel Pump wired with inertia cut-out.
New Water pump and fan
New Minispares 2 Core radiator
New KAD top engine Steady
New Avonbar Ultimate Water pump top engine steady
New KAD Lower Gearbox Engine Steady Kit
Denso (Small) alternator
New Stainless steel catch tank.
Crank, timing cover and rocker cover breathers

Ignition

Full Mega jolt system, with basic Turbo Map
Edis and coil pack
New Tom F Machined Crank pulley and sensor bracket.
New HT Leads
New NGK BP8ES Spark Plugs
gizmo electronic boost controller

cheers
steve

Edited by EssexSteve on 21st Jan, 2010.

i robbed this from tm ages ago, if its of any help

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Yes i moved to the darkside

Instagram @jdm_brett

Thanks Brett

Do a search. I answered a thread on this only this morning.

I just read it , thanks Tom

looking at that is the t3 and the size of the Ic will limit max boost if every thing is ok but what type of pistons are you using also.

but 16 psi will do for now

always looking for them bigger bunches of bannanas

if thats what seems to be a 7.7:1 cr then a lot of boost ,20 psi odd sohuld be safe on good fuel ,eg v power .dont know what the new bore is so i assumed 1293cc ...plus 20 overbore .

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

Just looking at the spec,

14-16 sounds fine and would safe and fast enough.

you can always go for more later.

Did you fit a centre main strap?

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802

I didnt build it , but would imagine dicanio did.
p,s not the italian footballer ...

Edited by EssexSteve on 23rd Jan, 2010.

As robert says it looks like the compression is going to be around 7.7:1 (i also seem to remember a fig of around this from when it was being built)

at 7.7 your not likley to run into det issues due to too much boost untill the boost starts getting very hot, which is also unlikely with that intercooler.

probably the weakest link is the pistons (Which are still pretty sturdy!)

I think i would be setting the boost controller to give a wide rnge of settings, from a nice docile 5 psi to 22psi in steps, with them a bit together at the top end so you can edge it up a psi at a time on the rollers.

somthing like 5,7,10 12, 15, 18,19 20,21,22

That sounds like a good plan joe , have 6 settings so 22 at 6 working down to 5 ish ?
cheers for that

Edited by EssexSteve on 23rd Jan, 2010.

also, you'll be glad you put in that 5psi setting on a rainy day....

ooooh thats a point , i didnt ask what make of pistons are they ?

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

16 psi is more than enough to grenade your ass out !!!