Author Topic: Lotus Europa 16V Gordini  (Read 40485 times)

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Offline Mecky

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Re: Lotus Europa 16V Gordini
« Reply #210 on: Friday,February 16, 2024, 06:01:25 AM »
New engine, new luck. For the 2024 season, I have had a completely new Renault Alpine 807 engine built up by a German Renault Alpine specialist company. The target is 150+ hp. Commissioning on the dyno will follow in March. The roll-out is scheduled for April 4th in Zolder, Belgium. The first race will be the Spa Summer Classic from April 25th to 28th.

To complement the new engine, I have ordered a new differential with a shorter gear ratio, which should be delivered at the end of February. Together with the Quaife locking diff, the Renault 395 five-speed gearbox should finally be race-ready, then. I also have a few other new parts made or in the pipeline:

1. new exhaust manifold from Banks to replace the old ugly monstrosity (if the new one is no worse on the dyno)

2. CNC-machined aluminum pulley for the camshaft from Kelvedon

3. CNC-machined aluminum alternator bracket engineered by myself

As soon as the gearbox with the new differential is completed and installed again, I will show a few photos here. I believe that the new exhaust will significantly enhance the optical impression of the engine compartment. But for now, we'll have to make do with the sight of the engine in the stand. The differential has unfortunately caused a delay in my work due to the production time of 6 months. I've been very impatient for weeks now and can hardly wait any longer.

Offline BDA

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Re: Lotus Europa 16V Gordini
« Reply #211 on: Friday,February 16, 2024, 08:34:50 AM »
Sounds like you have good reason to be optimistic this year! I’m looking forward to your race reports!

Online cazman

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Re: Lotus Europa 16V Gordini
« Reply #212 on: Friday,February 16, 2024, 12:25:54 PM »
Can't wait!
1973 Europa TCS

Offline Mecky

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Re: Lotus Europa 16V Gordini
« Reply #213 on: Tuesday,April 30, 2024, 06:45:13 AM »
The first race event of 2024 is in the books. New engine and gearbox configurations work nicely. I finished 2nd in class in both races against competition of four younger cars, the newest built in 1998. That's a solid start and brings a bunch of championship points. :beerchug:

As a first sneak peak, here is some onboard footage from my 2nd race at Spa-Francorchamps last weekend. I tried to bring the fight to a Ford GT40, but lost due to a driving error: https://www.youtube.com/watch?v=iXdSovqKufM

Offline BDA

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Re: Lotus Europa 16V Gordini
« Reply #214 on: Tuesday,April 30, 2024, 09:08:17 AM »
That's great, Mecky!! Congratulations! The car seems to be running really well! It's too bad about that spin. I was really hoping you'd make a pass on the GT-40 stick.

 :trophy:

Offline SwiftDB4

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Re: Lotus Europa 16V Gordini
« Reply #215 on: Tuesday,April 30, 2024, 01:06:30 PM »
Way to go Mecky !!
Very impressive considering that 40 has 3 times the hp and displacement of your Europa.

Offline 4129R

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Re: Lotus Europa 16V Gordini
« Reply #216 on: Tuesday,April 30, 2024, 01:44:43 PM »
Very impressive considering that 40 has 3 times the hp and displacement of your Europa.

My GT40 has 5.6L v 1.55L so about 3.61 times, and 459 v 125 so about 3.67 times the power.

They are similar to drive but the gear change on the GT40 is far easier to use.

Both get dazzled by headlights, the rear vision is very similar, but the clutch on the Europa is easier to use than the GT40.

Offline TurboFource

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Re: Lotus Europa 16V Gordini
« Reply #217 on: Tuesday,April 30, 2024, 02:29:52 PM »
Awesome!
The more I do the more I find I need to do....remember your ABC’s …anything but chinesium!

Offline Lumbes

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Re: Lotus Europa 16V Gordini
« Reply #218 on: Tuesday,April 30, 2024, 02:31:09 PM »
So very cool.  Your Europa sounds amazing and looks incredible to drive, awesome video Mecky.

Offline Mecky

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Re: Lotus Europa 16V Gordini
« Reply #219 on: Wednesday,May 08, 2024, 04:24:43 AM »
After almost two weeks, I've finally got round to reporting in detail on my experiences at the Spa Summer Classic 2024:

The first thing to note is that summer and April in the Ardennes don't really go together. In the night from Thursday to Friday, the temperature dropped to around 3°C. Fortunately, the feared rain didn't materialise for most part of the event.

My weekend began with a short test session after the usual administrational and technical scrutineering. I was on the Spa circuit for the first time in two years and was able to see for myself that Gran Turismo 5 is only of limited use as a simulator. In the weeks before, I had driven a Lotus Europa S2 on the Playstation with the same power and the same gear ratio over and over again on this track. This is good for practising the cornering sequence, but it's better not to derive braking points from it.

Unfortunately, the test session was riddled with red flags, so I couldn't get into a flow. At least I now knew the basic braking points and the gears for the corners for qualifying. I had only tested the new gearing in Zolder up until then. Qualifying was scheduled for Friday and again there were several interruptions due to red flags. The green flag came out about ten minutes before the end of the session and very few of the participants had even completed a timed lap. Now a light drizzle set in in the start/finish area. The bus stop chicane and La Source were slippery AF. Due to the general hustle and bustle in the field, I only managed one reasonably clear lap and finished 41st out of 53 participants in the overall classification with a time of 3:15.2 minutes. In the 1600 cc group, I was third out of five starters.

Overall, I had the impression that the Belcar Historic Cup field at this race was above average. I've rarely been so far back in the overall field, although of course it's clear that a 160-hp car from the 60s can't keep up with former DRM, DTM and Super Touring Cars. However, the high-calibre cars were clearly over-represented at Spa. Even BMW M3 E30s and Mercedes 190s had a hard time making it into the top 10. Spa, with its long (uphill) straights, is naturally a circuit where engine power is the trump card. At the next race in Zolder, I hope I won't have to look in the rear-view mirrors quite so much.

The first race started at 11 o'clock on Saturday morning. The first safety car of the season came out on the second lap of the race. A car went off at Blanchimont. Towards the end of the clean-up work, another car left a considerable oil slick in the same corner, meaning that the safety car phase had to be extended. When half of the race time had elapsed, the green flag finally came out again. In fifth gear, I now noticed the clutch slipping occasionally. Unfortunately, I couldn't establish a pattern because it didn't occur regularly at the same point on the course. At least I quickly realised that the problem was not affecting the other gears and especially the gear changes, so I decided to continue. About three laps before the end of the race, I noticed that the engine noise had become much louder. I therefore drove very carefully to the finish and didn't push any lap times - 3:17.1 minutes was my best time. I was always worried that the problem with the exhaust could cause a fire.

The rear silencer had come loose and fallen onto the run-off. This was possible after I changed the suspension of the silencer on the advice of the engine builder. Previously, the exhaust had always been additionally bolted to the gearbox with a rubber mounting. During the dyno run, I was advised to replace the rubber mounting with a rigid screw connection. The rigid screw connection so much that it broke the weld seams. This taught me something I already knew: never change a running system. Fortunately, attentive track marshals found the silencer and we were able to fit it again for race 2. With a rubber mounting, of course.

At the end of this mixed race, I was in 40th place overall and in second place in the 1600cc group. This was also the starting position for the second race on Sunday. The clutch problem was easily solved by adjusting the cable. The new clutch is slightly different in its design, so the old setting was not exactly right. In the second race I was able to drive without any technical problems. This time I had a duel with a GT40, in which unfortunately I first ran out of talent and then the road. You've already seen the video in my last post. The spin cost me about 12 seconds, but I managed to catch up with the Porsche 911 and the Ford GT40 thanks to another safety car period. Unfortunately, a queue of very fast cars had built up behind me, because of the safety car. In the final phase of the race, I was therefore more concerned with avoiding traffic than battling with the two aforementioned opponents. But as neither of them were in my class, that's not so much of a big deal.

In the end, I finished 36th overall and second in class again. Considering that the Europa was the oldest car in the class, I think that's OK. The cars behind me were built between 1988 and 1998. Unfortunately, I wasn't able to improve on my best lap time of the weekend. This was partly due to the fact that the GT40 was holding me up in all curvy sections of the track. I had my best times in sectors 3 and 1 directly after the spin, when I had a clear run. On the other hand, I drove too inconsistently overall. My best sector times together would have been 3:13 minutes. But it wouldn't be over here either. I think that I could have achieved a time of around 3:10 min with more free laps in a row. The momentum I lost in Eau Rouge / Raidillon alone cost me at least one or two seconds up to the braking point before Les Combes.

Unfortunately, the gap to the class-winning Toyota Celica is hugely demoralising. The driver has known his car for decades and drives much better than me at Spa. Of the 16-second difference (fastest lap), I take a third or maybe half of it on my head as the driver. But the Toyota also has a clear performance advantage. As far as I know, it is a two-valve engine with two overhead camshafts. According to the driver, it produces around 200 - 220 hp from a displacement of 1.6 litres. With 160 hp, of course, I lose a lot - despite my weight advantage. When comparing the measured speeds on the long uphill straight, I clearly lose out with 183.4 km/h compared to 195.7 km/h. The Toyota's speed is as high as that of the fastest 2-litre Alfa GTAM and outperforms the 16V Escorts in our starting field. Even the super-fast and light Alpine A110 from the 2-litre class is not significantly faster. That's quite something.

Nevertheless, I had a good weekend in Spa and was able to put in some kilometres with the new engine and the heavily modified gearbox. There were also quite a lot of championship points thanks to the 2nd places. I'm really looking forward to the next race in Zolder, which takes place on the Whitsun weekend.

Offline BDA

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Re: Lotus Europa 16V Gordini
« Reply #220 on: Wednesday,May 08, 2024, 12:27:54 PM »
Great pictures, Mecky! And great report on your race at SPA!

Regarding your competition, it appears the classification system over there is as hostile towards Lotus as it was over here when I was racing in the late ‘70s (Europa TCs competed against Datsun, now Nissan, 240Zs, 260Zs, and 280Zs).

You got two very honorable seconds. I think you did well and much better than in the past! Congratulations on big improvements all around!  :beerchug:
« Last Edit: Wednesday,May 08, 2024, 12:40:00 PM by BDA »

Offline Mecky

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Re: Lotus Europa 16V Gordini
« Reply #221 on: Monday,May 13, 2024, 06:00:47 AM »
You are right that the classification system in my race series is far from perfect for me. From my point of view there are two major issues:

1.) The corridor of allowed build-years in my class is huge. It spans from 1947 to 1981. In reality, there was never a car older than from the mid 60s. That makes me one of the five oldest cars of a field ranging from 40 to 60 cars overall. The big corridor stretches over a significant turning point in FIA tyre regulations. Cars built from January 1st 1972 onwards are allowed to use slick tyres, older cars are not. That means that there is the possibility that cars in the same class have to follow different tyre regulations. I prefer a level playing field on the tyre front. No matter, whether slicks are allowed or forbidden. But the same should be apply for everyone in the same class.

2.) The minimum weight requirements in each class are based on average continental-european touring cars with steel body from the 80s. 1960s Lotus cars with polyester body have trouble even reaching this required weight of 740 kg in 1600 cc class without fuel and driver. Thus, I can't use my weight advantage to equalize my disadvantage in power.

Of course, I have chosen the racing series myself and knew about these shortcomings of the regulations. Thus, mea culpa. But I was not aware of the extend, in which this 1588 cc Toyota Celica is superior in engine power. I thought, it would have up to 180 HP, because its DOHC construction is more modern compared to my OHV engine. I'm afraid that my engine doesn't have a lot room for improvement left. Maybe I could gain a handful of horses with a different exhaust and/or intake manifold and I will try that. But at around 165 HP there is a ceiling, even Salv Sacco told me that.

Every Renault 807/843 crossflow engine, which has more than 165 horsepower, is very likely to be an 1800 cc (or more) engine. But I won't be taking that route. This would mean a step up into the 2000 cc class, which has minimum weight of 810 kg. Even with increased power output, that amount of weight would be deadly for the Europa.

Offline BDA

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Re: Lotus Europa 16V Gordini
« Reply #222 on: Monday,May 13, 2024, 07:01:22 AM »
So older cars, which are already at a disadvantage, have to be saddled with inferior tires?! That’s lunacy!

With stuff like this and the all the politics surrounding Andretti trying to get on the F1 grid, it seems like the people who run motor sports are actively trying to ruin them.

Offline Mecky

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Re: Lotus Europa 16V Gordini
« Reply #223 on: Thursday,May 16, 2024, 01:05:54 AM »
So older cars, which are already at a disadvantage, have to be saddled with inferior tires?! That’s lunacy!

With stuff like this and the all the politics surrounding Andretti trying to get on the F1 grid, it seems like the people who run motor sports are actively trying to ruin them.
In the case of historic racing, the FIA has a safety concerns for the oldest cars. Because slick tyres are (of course) grippier than semi-slicks or historic-style racing tyres and therefore mean more stress for the suspension, chassis and brakes. At least with the Lotus Europa, they have a point. My suspension is already heavily upgraded, but the soft sheet-metal chassis is not very well suited for racing. Colin Chapman knew that, built the types 47 and 62 for racing purpose and didn't bother to enter the normal Europa in any race.

The mistake (from my POV) is that the rule makers of my competition span the class over that huge period of time. It would have been more sensible to divide it at the "tyre limit", which is 31st December 1971:
Older cars: no slicks
Younger cars: slicks

Regarding Andretti, you are completely right. The F1 teams are an elite group and try to keep this group exclusively to themselves. My guess is that Andretti will purchase the remains of Alpine sooner or later. This way, F1 can't keep them out.

Offline Mecky

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Re: Lotus Europa 16V Gordini
« Reply #224 on: Wednesday,May 22, 2024, 01:53:46 AM »
Hi guys,

this time in Zolder my weekend went completely trouble-free. At least from a technical point of view. From a regulation stand point, I got screwed. The winner of my class used Slick tyres illegally, as his car was built before 1972, as my Europa. I made the technical scrutineer aware of that before the race and complained to the race organizers after the race. Until now, I'm still waiting for the result of my complaint. That's simply unfair and I can't accept being screwed like that.

As long as that process is going on, I will wait with my detailed race review. For the time being, here is a YouTube video of my best lap of this weekend: https://youtu.be/WgStfaQNrS8?feature=shared
My driving is finally starting to look like racing. :pirate: