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Project Lightweight, Trackday Clio 172



sennaalbronda

ClioSport Club Member
  clio 172 ph1
Definately not a big exhaust port head than what I've got. Hmm, strange. Unless phase 1's also had the smaller ports, mine's had a head or an engine change at some point.
denk het wel, bij mijn motor in mijn ph1 heb ik ook grotere uitlaat poorten, jouw motor is denk ik een F4R736.
 

sennaalbronda

ClioSport Club Member
  clio 172 ph1
Must be. Strange, as I have a lot of documentation of the cars history. Is there any way I can identify the engine or head

your engine is a F4R732 (original phase 1 engine for cars after around march 2001) or a F4R736 from a ph2. judging by your licence plate i guess they fitted a 736.
if you send me your vind i will find it for you as i have a vin decoding system for Mk1 clios and Mk2 clios.
 
Any updates on this?

Little progress is also progress :p

I took out the big engine mount, savind another 2,2 kg's.

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This was the last item of the weight saving programm, in total I removed around 12 kg's in the front of the car, which is quite a big number, but is also good for the weight distribution, since it all came from the very front of the car.

I also had my flywheel lightened and balanced by Emming tuning, which is a very respectable tuner over here.

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Didn't lose much weight, it now weighs 4,6 kg's, but since it all came from the outside it should be noticabe.

I also wrapped the exhaust, with the main reason that my brake lines are exposed to the exhaust.

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  172 sport
Hi mate i see your running gaz golds have you had any fitment issues on the front i’ve just taken delivery and mine don’t seem to fit the struts there’s a good 3mm gap between the hub and strut. photo attached
 

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Another update, slowly we'll get there.

First, I added some bonnet vents to guide the heated air from the radiator out. There wasn't any room for some proper ducting, but hopefully the air passing the radiator hits the engine, and gets sucked upwards. Otherwise, the high pressure above the splitter and in front of the car, and the low pressure above the bonnet will create the airflow.

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When that was finished, it was time to get the engine in the engine stand, as it was still hanging in the crane. I saw in @NorthloopCup and @Tom Johnson 's race engine thread that they mounted the engine transverse on the engine stand, which I thought is a brilliant idea, as it gives you the opportunity to work on both sides of the engine. So I made a mount to do that as well.

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Than it was time to do the cambelt. Timing was off from what it's supposed to be.

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This was my first time doing this on a Clio 172, but with the original tools and manual, it wasn't to difficult of a job. Wouldn't want to do it on a standard car with all the ancilliaries and the engine in the car though.

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Also, in the mean time I bought an Daihatsu Cuore alternator as they are really light, 3,1 kg's.

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Kev@KAM

ClioSport Trader
  Badass Toyota
ha that looks a lot smaller!. Does it line up with the standard aux belt position or will you have to space the pulley out?
 

scruffydubber

ClioSport Club Member
  RS CUP
Great progress.

Any downsides with the cup racer style engine mounts?

I have a Job list of ideas to improve and save weight on my own track car. You seem to do these before I get chance, or do others that I then add to my list.
I find your build thread very useful :)

The alternator looks very similar to a Denso unit, which are quite cheap to buy new.
 
Great progress.

Any downsides with the cup racer style engine mounts?

I have a Job list of ideas to improve and save weight on my own track car. You seem to do these before I get chance, or do others that I then add to my list.
I find your build thread very useful :)

The alternator looks very similar to a Denso unit, which are quite cheap to buy new.

Thanks for the compliments. The same goes for me, I get a lot of ideas from other builds on here or others do things I already have in my head.

The alternator IS a Denso unit. Just bought it secondhand very nearby for 20 Euro's. 😁

About the engine mounts, I'll have to find out, don't know yet. I've also mounted the radiator on the splitter, and that might not be so convenient when the car has to go on a bridge or a rolling road. 🤔
 
So when the belts were done, it was time to move to the other side of the engine.

I've had an oil leak for as long as I've had the car, I figured it could only come from the crankseal at the gearbox side. Turned out it did.

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When I pulled out the old one, I noticed a slight scoring on the crankshaft sealing face. This made me thinking, was it even the seal that caused the leaking? Or is the the crankshaft itself? I don't know, time will tell I guess.

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New seal installed, taking great care not to push it in too far.

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Then I installed the lightened flywheel and new clutch assembly, and the gearbox, and the engine could go back in.

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On a slight sidenote, I also made an economy record with my Golf GTI on a long distance trip.

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I have to admit, I had the wind in the back, and maximum speed was 100 km/h. Nevertheless, a great result for a 300 hp car wouldn't you think? :giggle:
18,6 km/l equates to 43,7 mpg.
 
When the engine was in, I put everything back to where it's supposed to be, all went smooth, and today I was ready to do the test start. It wouldn't start at first, turned out to be the earth wire which sits at the front of the gearbox, which I forgot to connect. Then I saw some coolant leaking near the waterpump. Just a case of tightnening the hose clamp a bit more. And after that, it fired straight up.




Then I saw a fuel leak so I turned the engine of again. Ktec sell these connectors, and they aren't expensive at all, just 5 Pounds, but shipping to the Netherlands is 30 Pounds, for such a small order. :cautious: So I ordere some O-rings first, if that doesn't work, I can always order at Ktec.

I also bought something to bring more gear to a trackday.

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Bought it for family weekend/holiday trips, but it will also come in usefull for a trackday. :p
 
Just a tiny update, I weighed the car again. It weighed the same as 2 years ago. Only difference is, at the time I weighed it with 20 liters of fuel, this time with 50 liters of fuel so decent savings have been made.

Weight with me in it is 980 kg
Weight without me is 860 kg
Weight without 50 litres/36 kg fuel is 824 kg
Weight distribution with me in it is improved from 65/35 to 63/37, front/rear.
 
Wow 860kg. Thats about 180kg lighter than mine last time i weighed it. Really keen to see the difference! I'll be at Zandvoort on the 30th :) Looks like I'll be the one behind you this time...
 
With a trackday coming up tomorrow, I finally have the car ready. :giggle:

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Lots of little things needed to be finished.
For instance, I never liked the splitter rods I had, as they made things really complicated to remove the bumper. So I made new larger splitter mounts and reinforced the splitter it self.

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I also ditched the large brake cooling ducts, as I always doubted how much they did, apart from blowing a lot of air in the wheel well, which is already a high pressure zone. So I replaced them with just forced cooling direct to the brake disc. And to reduce the wheel well pressure further, I made some side vents.

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I know aero is a controversial topic on this forum, but I think it's an interesting topic, which I am willing to spend some time on. The idea of letting less air in the wheel well, while making it more easy to vent out, is offcourse to reduce the pressure there, and thus reduce lift on the front axle.

I also came accross a cool set of Hispec calipers from a Radical SR3. I bought a pair of 305 mm floating Brembo discs for a 595 Abarth. They fit inside my OZ Superleggera's, with an 18 mm spacer. Just waiting for some service items and brake pads from Hispec to determine the adapter dimensions.

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The difference to standard discs is huge.

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As my last trackday at Zandvoort was a complete disaster, and I love the track, I was keen on getting back rather sooner than later.
Luckily another opportunity arose.

As my cooling system failed last time (because of my own incompetence), and I had my engine out over winter, and replaced a lot of parts, I saw this as a test day, and wanted to start slow, and gain pace along the day.

First session, I went really slow, and we had no real issues, so it was time to pick up the pace a bit. Although I never intended to set a new pr, I got damn close, just 0,15 seconds slower. :p

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Conclusion, I had a really good day, and can't wait to go to the next one. Next one planned is Zolder Belgium by the way, really stoked about that one as well. Never been there before. Let's hope Covid doesn't interfene with me getting into Belgium.
 


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