Mr2 Turbo Sprint Car (Banshee)

[stephano]

i think by now i only had about 3 days to work on the car so the photos are rare from now on

charge cooler is now in



note the trd braces from Mattymr2. cheers!

as we had no idea what the stock boost would be or the mixture so i fitted these along with a switch for the cc pump. also fitted my manual boost controler where the cig lighter was





this is how it looked all piped plumbed and ready to go



little vid of its first start up (only half finished) and then its first full blast (finished)
on a private road.

http://www.youtube.com/watch?v=FuGIGBGNe6o

so all running and at the first race meeting ready to go



all stickered up for the first run



this was my fastest run of the day my first event in the car and beat my personal best and won the class by a 5+ seconds
and with stock ride settings


http://www.youtube.com/watch?v=RSDJ0VOoBz0

so having a bit of time between races i bought these to see how well the charge cooler was working





they work very well.

[craig]

Damn, thatn side exit exhaust is bloody loud!!

[stephano]

so things going well and still fitting the odd bits changing settings etc..
i fitted a pair of front arm spacers before the first event.
they fitted nicely to the ball joint but what i failed to notice is every bit of sidways load was taken up on the bolts as there was no dome to fit where the ball joint did.
this is what happened
excuse the bad language
http://www.youtube.com/watch?v=AUqFhb_2Slw
im supprised it lasted 3 events.

decided to splash out on a gopro hero for my favorite event
no sooner had i fixed the ball joint problem things got worse!

http://www.youtube.com/watch?v=JJprKFXh-ho

so i rebuilt the engine the next weekend in between events
i had problems with the valve stem seals on the exhaust side and thought that was prob the cause as it was running so close to the limit the oil was enought to just caused bad detonation.
unfortunatly it was 3 broken ring lands and a catch tank full of oil later that i discovered the nut had come off the shaft in the waste gate and was allowing lots of boost creep.
lucky we had 8 spare rev 3 pistons
well managed to sort it eventualy (6 pistons later) and with the stem seals done and waste gate working the rest of the season was a breeze

this is my quickest run i filmed at st.eval

http://www.youtube.com/watch?v=9PhQ043jJH8

i finished the season with my quickest run 0.18 seconds off the all time class record set by a 400+bhp scoob (and i missed a gear )

http://www.youtube.com/watch?v=uV86AX_WzB0

had a go at an autosolo as well and must say it was epic fun

http://www.youtube.com/watch?v=hTmAb7gR1Gs

few more pics from the season











well that was the end of 2011 season and my first full season.
the hillclimb side of things didn't go as well as the sprints due to various problems.
but the sprints went better than i could have wished
i won every event in this car getting the overall class win and finishing 2nd in the cornish sprint championship and 7th in the overall championship.
Also setting 2 class records and getting the 2nd fastest time of the day at portreath sprint across all classes


heres one for the jap cars



heres one for me

[stephano]

Damn, thatn side exit exhaust is bloody loud!!

haha what in the vid? that was just a straight pipe on it with no silencer

[craig]

Damn, thatn side exit exhaust is bloody loud!!

haha what in the vid? that was just a straight pipe on it with no silencer

Was gonna say!!!! Any sound clips with full system fitted?

[Mike 'MR2' McHugh]

Loving the videos, looks like some really good driving done there !! Car sounds great and appears to pull really well in the straights !!

[polmac]

Just joined and first thread i've read mate.

Top job and nice driving too .

[bobhatton]

well that was the end of 2011 season and my first full season.
the hillclimb side of things didn't go as well as the sprints due to various problems.
but the sprints went better than i could have wished
i won every event in this car getting the overall class win and finishing 2nd in the cornish sprint championship and 7th in the overall championship.
Also setting 2 class records and getting the 2nd fastest time of the day at portreath sprint across all classes


heres one for the jap cars



heres one for me

Lauren should be reading this. this is what she thinks of a MR2 doing sprints
"Biggest problem with the MR2 is that it is rarely competitive against other cars in it's class. "

Well she is a woman so we will have to forgive her for not knowing how well they can do.

Oh and look at my time with a stock Rev 2 engine so 75HP down on Steve, I must just be a better driver

[stephano]

Damn, thatn side exit exhaust is bloody loud!!

haha what in the vid? that was just a straight pipe on it with no silencer

Was gonna say!!!! Any sound clips with full system fitted?

i have but it fits in a little later in the thread

that first run vid has the full system on when its on the road so when its crusing around that long bend thats pretty much its noise.
untill i floor it and the screamer opens up

its only the start up bit thats a straight pipe

ill do a little outside the car one tomorrow at the hillclimb.

[stephano]

Loving the videos, looks like some really good driving done there !! Car sounds great and appears to pull really well in the straights !!

Thanks mike. hope to have it pulling better soon when the ecu is on

[stephano]

Just joined and first thread i've read mate.

Top job and nice driving too .

cheers bud
im sorta new myself joined in 2007 but never posted this is my first thread i started it a week ago.

[stephano]

Oh and look at my time with a stock Rev 2 engine so 75HP down on Steve, I must just be a better driver

your fastest time 119.42
my fastest time 116.36

3.06 seconds thats not 75bhp difference................................ thats Talent!

[bobhatton]

Oh and look at my time with a stock Rev 2 engine so 75HP down on Steve, I must just be a better driver

your fastest time 119.42
my fastest time 116.36

3.06 seconds thats not 75bhp difference................................ thats Talent!

118.13 was your best on that day and I was faster on the first run. I would have been up with you if I had not gone onto the grass to miss that rabbit

[stephano]

Moving on to the modifications for 2012

we had a few discussions in 2011 with the marshals about our saftey equipment or lack of it!
although we were well within the rules (for a road car) they were a little conerned that we were doing very close (somtimes beating) times/speeds of the full blown race cars and single seaters yet having no roll protection and standard seat belts.
so we got a couple of cages





The biggest problem we were going to have fitting them was to stay in roadgoing we had to keep the interior as stock as possible.
lots of cutting and hacking coming up!





































Cage and interior all in now for my seat

we went to the auto sports show and made the mistake of trying out some cobra seats
i got the suzuka pro gt





having the roll cage now above my head room was limited so had to drop the seat as low as possible

extra low holes



shaved the mount a little



a little cutting





plates welded in and painted



then the harnesses go in





all done

[stephano]

118.13 was your best on that day and I was faster on the first run. I would have been up with you if I had not gone onto the grass to miss that rabbit

or a cone i might have knocked into your path

[bobhatton]

118.13 was your best on that day and I was faster on the first run. I would have been up with you if I had not gone onto the grass to miss that rabbit

or a cone i might have knocked into your path

No, the cone was when I spun Matts car and it came back with me to the pits

[bobhatton]

Now fitting that cage was easy in Steves car, you should try it in a T bar, took a full 6 weekend, thats 12 days. It must have been in and out 12 times

[stephano]

Next task for 2012 was to drop the engine out
once it was out i decided i wanted a colour change
so stealth matte black was the obvious choice













thought id stick a set of rev3 lights on while i was at it



so car painted time to crack on with the engine.
The first thing was a set of wossner 8:1 86mm pistons





then cams and pullys









valve springs and retainers





so set to work on the pistons
once again removing sharp edges and flatting off the shine











all done



with the engine out (again) i started the stripping down!



couple hours later



well after i took the crank out we saw further damage from poping the engine the year before



this is where the piston melted and had to scrape the aluminium off



as this block was now scrap i had to use one of the others we had.

just making sure its an 86mm bore



another rev2 so the usual was done to fit a rev3 sump and baffel











so that done i took it for a dip and hone



ready for paint



ok some of you may think why white?
well ive found white to be so much easier to work with/on even tho it gets dirty easy.





once i got the outside well cleaned and painted i gave the bores a very very good scrub



then blasted out every oil and water way with steam to wash out the acid.
this was great fun





took the crank, rods, clutch, pistons, dampener off for balancing
so while they were away i got on with the cams

took the cams out and the buckets.
as these cams are quite agressive i couldnt use rev2 buckets and shims as the cams will flip the shims out.
so got one of the rev3 heads and took the buckets and shims off it



got my hands on all the rev3 shims i could find measured them then wrote the size on them.



got the springs out





got them all in with the valves and fitted the buckets
then when i was putting the cams in i realised i had used rev2 valves
the rev3 valves are shorter between collet and tip



so out they came
i cleaned up and re-cut the rev 3 valves









valves went in and all fitted lovely
head done!

[stephano]

No, the cone was when I spun Matts car and it came back with me to the pits

what this one



i knew that pic would be usefull one day

[Magic Beans]

Very impressive. You and Bob do like your builds don't you. Although I do like to read them