37 replies to this topic

[Sprocket]

How about the A series gasket on the K100 block

[minimole]

o right so the chambers are a bit small ?

[Sprocket]

sort of

Edit

Oh this is on a 998 block on one of the outer two cylinders, the middle two dont line up at all

Edited by Mini Sprocket, 24 November 2005 - 11:51 PM.

[chairchild]

that's suprisingly close though, to think that they came from totally different manufacturers!


Guessing you've had to pocket the block to fit the valves? And have you just drilled+tapped the block to accept the K1 arrangement of bolts?

[stevenford_uk]

yeah a bit of incite into this would be very helpful!
does it give enough of a power increase for it to be worth doing??

[Jammy]

Just thought I'd show you guys interested in the bike head conversion, this!

Looks like Simon at Morspeed has been busy!!

[wolfie]

i have just secured a deal with a mate for my old spare turbo lump

he wants at least 170bhp from it, so i have told him the following:

rebore to bout 1290
low comp pistons,
combustion chambers enlarged to lower compression ratio further,
wild porting
avonbar ultimate turbo cam
set of roller rockers
T3 turbo running bout 17psi
steel headgasket
total carb rebuild and rejet to suit
straight cut dog box with bronze selectors
at least a 4pin diff
arp rod bolts
shot peened rods
avonbar dizzy
big intercooler
and i am thinking about rigging up an extra injector on a pressure switch so when it goes above a bar of boost it dumps more fuel in. easy and effective
straight through exhaust

is there anything anyone can suggest that i have missed or to make it stronger, as i do not want to have to rebuild this for him every other day




thanks for the replies guys, i was in a bit of a hurry with him sitting next to me bugging me to ask because he didn't trust my judgement in what he needed.

the blocki have got already has a centre main strap, i have a t3 turbo off a renault 21 turbo for it, so ill swap the comp housing off the 21t T3 and bang it on the metro turbo unit.
i have a cossie 2wd intercooler sitting at home which i didn't think about.
thanks for the comments on the head studs, they had totally slipped my mind.
i dont want to go near nitrous for him, because it will benifit him when he has got the juice but when he runs out he'll be expecting the same kind of power etc and it just wont happen, so i am staying away from nitrous.
i have been looking into megasquirt kit, so i could fuel inject the mini, use a ford edis system, and a throttlebody etc off a mondeo 2.0l or something, plenty big enough to flow whatever boost he wanted and cheap and easy to pickup.

why should i go for the stg2 instrad of the avonbar ultimate?? i always believe if there aint much price difference in something that will allow me to go further in the future go for that instead of the one that will do for now.

as for the head i will be doing that myself with some help from my dad, he has been porting race bikes for years and i did my mazda mx5, so i know the crack there, i also have very detailed pictures of a "work of art" turbo head.

straight through exhaust is a must, anything that pisses off the babylon more than my car is better!!! 
best for power and safety for the engine, so ill do it happily for him, lol

i recently got rid of a very very fast renault 21 turbo which i played around with from the std 175bhp and 199ftlbs torque to 248bhp and 249 ftlbs torque no further up the rev range, and only running 2 psi more than std!

so i know the crack with turbos, just for those with doubts over that 1st post lol
thanks again guys

Got to be honest i would be pretty worried about you building me an engine, you seem to have just looked though an avonbar catalogue with out any reaserch into turbo a series engines and a seemingly open chequebook with a total disregard for components that work well together let alone components that work on the road, a recipe for disaster imho

A good look at what others run would be a good starting point, dave phil and budd have quick cars and a wealth of experience yet you only seem to have looked at some of the points raised,also some good advice to your friend would be good before he gets open wallet surgery, i personally would rather have a drivable 150 bannana engine than an usless unreliable undrivable 170 bannana engine

not trying to sound harsh or start an argument just trying to give honest critisism

[stevenford_uk]

i respect your opinion dude, but he has no mechanical knowledge at all, i built a turbo mini not all that long ago and have had a lot of experience in rebuilding it, its been a while since i have done any research into the a series turbo lump, but the principles are still the same as every other turbo lump out there, low comp, more boost, more fuel, colder air = mucho power.
the car will not be a daily driver, in jan when he gets his student loan he will be ready for the lump, so i will start looking more in depth to the parts then.
if it doesn't produce 170bhp its gotta come apart again and more mods to make it produce it, all he asks is that the drivetrain holds up to it, the rest is cheap in comparison to the drive train.