My Silver 2003 Turbo MR2 - Sprint & Hillclimb Car

Started by Swan_Connery, September 12, 2015, 20:30

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Swan_Connery

#75
Pipes arrived for intercooler. 63mm out the intercooler down to 51mm on the turbo and intake. Also got rid of most of the cheap hose clips and got some big mikalor clips.

First offer up with the pipes and it was looking good   s:D :D s:D  


Before intercooler goes on. Dibond mounted to rear cross member and over the exhaust to stop heat transfer up into the intercooler. Also note mk2 mr2 turbo intercooler fan. I'm still awaiting my two 7inch spal fans so that will have to do for now.


Intercooler on and ready for rear bumper to go back on.


View from inside the engine bay looking back. As you can see it's a tight fit with only 2mm to spare!


Anyway, did 100miles tonight of the 300 I'm meant to do with the clutch before giving it big licks. I'm booked into the dyno for 2pm tomorrow, so need to get another 200 miles done in the morning. Then hopefully racing this weekend!

Swan_Connery

#76

Mark A

#77
How are you finding the Competition Clutch? Suitable for road use? How much did it cost?

Swan_Connery

#78
Pretty harsh but still driveable. I'd hate to sit in traffic all day with it, and you do require larger calfs and a fair bit more revs from the get go, but my car is desgined for the track after all.

£320 I think for the stage 4, 6 puck.

The Other Stu

#79
Sounds like a proper sports car then?

My mate's second car was an MGC (1967, F plate). 3 litre competition car, basically (think MGB with such a huge lump in it that you struggled to see over the bonnet)
You used to have to twist your hips in such a way that you could put your weight behind you to push the clutch down.

And don't start me on the non-existent brakes. You folk with your modern brakes.....

Do you have to keep it road legal for the competition?
No Longer Here

Swan_Connery

#80
I do indeed. Have to bring with me proof of insurance, MOT and even tax! Had to get my phone out at the last event and go online to propve it was taxed! Some people really take the mick out of what is "road legal" though, but that's another story  s:D :D s:D

As for MGs, I once drove my dad's rally prepped MGB GT. Not the V8, the woeful 1.8. That totally redefined the term "boat" for me  s:D :D s:D

The Other Stu

#81
Quote from: "Swan_Connery"I do indeed. Have to bring with me proof of insurance, MOT and even tax! Had to get my phone out at the last event and go online to propve it was taxed! Some people really take the mick out of what is "road legal" though, but that's another story  s:D :D s:D

As for MGs, I once drove my dad's rally prepped MGB GT. Not the V8, the woeful 1.8. That totally redefined the term "boat" for me  s:D :D s:D
Yup, the MGBs were a bit like that. Different times etc.

I've always wondered about the whole race prep thing with Rally cars too. I mean, the rules state that there should be x hundred road cars built, but many teams make a car that's never actually sold, or if it is, it's to specialists etc.

It's not like you could have taken the Subaru Impreza to do your weekly shop, for instance..... (not to mention my Missus would moan about the bucket seats)
No Longer Here

Swan_Connery

#82
After contacting my good friend Chris @ Dynatune last night he informed me of a cancellation if I fancied finally getting the PowerFC installed and mapped.

The 30 mile run to Chris' completed my run in of the clutch and although I was worried something would fall apart or blow off on the dyno I needn't have worried.

Since the intercooler installation I'd disconnected the boost controller, so all my runs were done at the standard actuator pressure of 0.5bar for safety and accuracy.

We did a base run with the emanage blue (dotted line in graph below) and got 184hp at the hubs or 239hp flywheel (1.3 conversion ratio used by all the DynaHub guys like BLink).

A quick swap over onto the PowerFc saw instant gains, and after a good few hours mapping we hit a high of 221hp at the hubs or 287hp at the flywheel. However, you'll notice a spike in power at 6krpm and it not tailing off, this is due to the injectors going to 100% duty. So in order to keep everything in check, for safety reasons we've put a 6000rpm limit on he car at the moment till I can either getting a better fuel pump or add an adjustable fuel pressure regulator. Suggestions?  s:D :D s:D

Anyway, I'm off to bed, I'm up in 7 hours to go racing for the weekend!   s:D :D s:D  


1979scotte

#83
What was your peak torque dont want to fry the gearbox
First they came for the socialists, and I did not speak out—because I was not a socialist.
Then they came for the Jews, and I did not speak out—because I was not a Jew.
Then they came for me—and there was no one left to speak for me.

Free Ukraine 🇺🇦

Swan_Connery

#84
Was at 239 when we checked and brought it down to 220.

Swan_Connery

#85
Managed a 2nd place yesterday at Kames, then beat the Honda s2000 into 2nd place today for my 2nd class win of the season!  s:D :D s:D

[youtube:2obm7aqy]lvnFt_9szBw[/youtube:2obm7aqy]

Pushing a bit too hard on my last timed run as I knew I had already won the class  s:D :D s:D

Apologies for the poor video angle again. Will have something sorted for Fintray.

Thanks again to Chris Forbes @ #dynatune and everyone @ CHS Racing!

Swan_Connery

#86

JoeCool

#87
Looks very quick!!

Do you have the cross bar the roof mounted to in still? If so, the bracket for the roof latch makes a good camera mount point. It's where I shot the bulk of my Nurburgring footage from and it gives a nice view down the road.
2ZZ '02 Roadster

1979scotte

#88
Quote from: "Swan_Connery"Was at 239 when we checked and brought it down to 220.

Wheels or crank?
239 @ crank is fine.
My Sp240 does 220lb roughly.
First they came for the socialists, and I did not speak out—because I was not a socialist.
Then they came for the Jews, and I did not speak out—because I was not a Jew.
Then they came for me—and there was no one left to speak for me.

Free Ukraine 🇺🇦

Anonymous

#89
By the graph I would say at the crank as it shows 183 on the graph

Swan_Connery

#90
237 at crank if you x by 1.3 the figure a the hubs.

Fave pic


Swan_Connery

#91
Update!

Post race inspection, and also whilst fitting a walbro, revealed the following:



So I decided to give Fintray a miss and focus on getting proper airflow through the intercooler before getting the car remapped with the walbro.

......and also a turbo to block mount/stay to stop the cracking happening again.  s:twisted: :twisted: s:twisted:

Swan_Connery

#92
With the manifold off getting welded I renewed a few jubliee clips and replaced the turbo water hoses with braided ones.

With the mnaifold fixed and all of that bolted together, along with a bit of metal bar bolted between the turbo exhaust housing and the block, I set about the vents.

From the previous events I've done Ive found a lot of heatsoak whilst sitting waiting for my run. Even with fans blowing in the engine bay I'm essentially just blowing warm air at the intercoolers rather than cool air. I wanted to seperate off the rear intercooler boot section as a cold zone, and the engine bay as a hot zone, with air coming in from the side vents and exiting our the engine lid vents by way of a fan. The rear boot section I semi blocked off from the engine bay with a bit of dibond, then added a second bit of dibond underneath. On the second piece I drilled 2 100mm holes and fitted 2 heating vents upside down to catch the flow of air coming under the car. Coupled with some 100mm aluminium piping from B&Q to direct the air, and some banding, I had made a pretty impressive ghetto vent system for my intercooler.   s8) 8) s8)  

I also added an oil catch tank. I noticed after a few hard runs I was getting oil coming out of the top breather, so I've re directed it to the catch tank in the rear.

I took the car out for a quick blast and the difference was a very noticeable.   s:D :D s:D   The initial turbo/throttle lag I used to get is pretty much gone and she picks up so quickly now. The only downside.....as soon as hit approx 5k in 3rd gear the ECU started flashing at me. Injectors maxxed out.   s:cry: :cry: s:cry:  

Off to book in another rolling road session before Doune next month!










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