A purpose built street car

[Jyrki]

Time for another report... a couple of races done again. First there was BRC at Tierp. After Ford Nats I barely touched the car; plan was to repeat what it did in Alastaro, but on a prepped track, hoping to improve et. Track was good, weather was excellent, event was really nice, but my car did not work. The clutch that had held fine decided not to hold at all, in any gear. Well, it held in the burnout, but slipped really bad in 1st, 2nd, 3rd... With my car it is too much work to do anything to the clutch at the track, so after three attempts I just parked it and enjoyed the event.
I think I saw this same movie last year, though back then it was the gas pedal

Back at home, and based on the advice from Niklas, Johan and Ron, I added weight to the clutch and shimmed it differently. Next events were SCC and FHRA Finals at Motopark (the other real drag strip in Finland). I chose Motopark. It was not an easy decision not to join SCC this year... I did the trip with a trailer 6 years in a row and it was always a blast. But it's a long trip, and the weather forecast was not good. So I was off to Motopark, this time with Pekka helping at the track. Another nice track, and nice weather.  Four passes Saturday and one Sunday. Finally the clutch was operating close to the way it was intended. Good news after the one-year-fight. Two of the passes were partly wasted because the clocks started before launch. Playing with launch rpm and boost we worked 60 ft down to 1.34sec, 1/8 mile to the 5s (5.96sec / 184km/h), and 1/4 to 9.35/231. Decent wheelie in 1st, too big wheelie in 2nd, and I ran against the llimiter for 0.3sec. My mistake - lost some time there, but not much. Back up pass was 9.42sec.

I have ran out of adjustment in the rear suspension, but there is something I should be able to do over the winter. Also, the engine is not making more power if I raise boost from 1.3bar - I have to figure this out cause the car could handle more



Jyrki

[Shag55]

Nice Jyrki! You are on track to plenty of 8sec passes.

[henk]

Great looking car,it is a shame i haven't seen it at SCC.

Henk!!!

[Jyrki]

Last report for this year:

After Motopark I found a clamp in the pipe from IC to throttle body leaking, and replaced it with some 3" silicone hose. Hoping it would make more power I made the trip to Pistonhead Finals at Kjula with my friend Jukka. We arrived Friday afternoon, took the car to tech inspection and got everything ready for Saturday. The Västerås guys arrived in the morning with some ice for the liquid IC.

The first pass felt easy and nice. No drama from start to finish. The engine bogged down to 3400rpm at launch but still pulled 1.37 sec 60ft time. It ran 5.82/192.9 in the 1/8 mile and 9.09/239.8 in the 1/4. In the 2nd and 3rd passes the clutch started to get more and more agressive, and just spun the tires bad. 2nd pass 60ft was 1.52 and ran 6.00/193 in 1/8 and 9.27/240.4 in the 1/4. 3rd pass it was spinning like it was 2013 again   1.74 60ft, yes that is correct   Ran 9.71/229 putting it in neutral before finish line.

The car behaves real nice at 240+ km/h (GPS showed peak 244) without any aero stuff   Maybe it it is good to weight 940kg?

I am very happy I made the trip to Kjula. Extremely nice event, nice people, friends, lots of nice cars from nostalgia blown methanol to 4wd turbos and a nice strip.

I am also quite happy with the 9.09 and exceeding 240km/h. Of course it is not running as it shoud yet, but I have heard that it is not supposed to be easy  
The ToDo-list for the off-season is done...

Thanks Jukka, Johan, Fredde for the help at the track.

See you in 2015,
Jyrki

[Frallan]

Love your car and your reporting just as much!  Have a good winter and even better spring/race season 2015!

[Martin]

great report!

[Jyrki]

Sharing some great picture by a great photographer:

[ Attachment: You are not allowed to view attachments ]
[ Attachment: You are not allowed to view attachments ]

https://www.facebook.com/FastPhoto.se/photos/a.595350230574196.1073741836.579904592118760/595350340574185/?type=1&theater

[kielbasa]

This has been a great thread to read. Very cool car

[Jyrki]

Been a while... maybe I didn’t write any reports untill now because the season was not easy.. Car was ready in the spring, and I took it for a test’n’tune in mid-May. With Tomi we drove 300km to Motopark; left very early in the morning and on the way it was close to zero Celcius. In Motopark it actually hailed, but in the afternoon the track was all good and we ran a pass. Clutch did not hold. Tried again with a different launch rpm & boost – no help 

Next stop Pistonhead at Kjula Dragway, travelling this time with Kari. A really nice event, and it was good to see Stian, Johan & rest of Västerås gang. My new clutch & setup only held for a second pulling a wheelie and then let go  The hamburgers were excellent though 

Then, with a new clutch setup, it was time to go to BRC Tierp. Our convoy consisted of Make’s cool turbo Superbeetle, Tomi’s uber-cool 240Z and my purpose built street car. Nice event, friends, Leif’s car making some serious passes, weather, and again really good hamburgers! I ran 3-4 passes, bogging on the line and finally breaking my Mendeola  Best pass was 9.5/238 @1.3bar boost, bogging to 1700rpm which hurt the 60ft

Even though I felt tired I took the engine & transmission out right after the trip and took the Mendy to Alhoracing, who had promised to fix it. He worked quite a few nightshifts, and made it all good again. All I did was to raise boost to ~1.55bar, and put the car back together.

Before the FHRA Finals we tested that it works as it should at the familiar truck terminal, and then I registered to the race. Weather forecast was not accurate, and the rain that was supposed to be over by Friday morning lasted till afternoon. Then it was time… first pass was not successful (spun the tires, 1.40 60ft, then slipping) but looking at the data we though we knew what had gone wrong. Next pass with less rpm and less boost it bogged to 1300rpm, killed boost down to 0.6bar, then picking up again and pulling thru gears. Car went straight and pulled a 9.07 and 250 km/h. WOW  with Stian’s old GT4294 it responded to higher boost  Next day first pass with more boost at launch it pulled 1.39 60ft, 9.011 and 251km/h. Close 
I took some fuel out (it was rich) and on the fourth pass with even more boost at launch it pulled a wheelie, ran clean and effectively up to 1000ft, then misfired a little, I lifted and pulled the chute right after 1150ft. 1.35 60ft, 5.68 / >200km/h 1/8 mile, and 8.887 / 222 ¼ mile. 330ft, 660ft and 1000ft were really good. Pulling the chute early hurt the et by maybe 0.04sec, so it really doesn’t matter now.

Mission accomplished:
8
>200 half way
>250 full pass

Thanks to everyone involved, specially Tomi & Kari!

[ Attachment: You are not allowed to view attachments ]

Jyrki

[spoolin70]

Congratulations Jyrki

Good to see your time and effort paying off with an 8 

Cheers
Darren

[Berger]

Congratulations Jyrki!! Finaly!! 

[Airspeed]

Really loved the write-up. Thanks for that!

Oh, wicked ET for a street car too!

[Zach Gomulka]

Wicked build. My favourite street/race car by far.

[bedjo78]

Glad you got on 8 ..

[Nikke]

Onneks olkoon,Jyrki...

[richie]

Well done on the 8    Now you can turn it up?     I nominate Niklas for boost setting duty!!!   

[BeetleBug]

I nominate Niklas for boost setting duty!!!   

Or Skinne   

[vwhelmot]

Awesome, fantastic car

[Fiatdude]

Congratulations !!!! excellent effort

[Erlend / bug66]

Damn! Could not happen fast enough

I can't wait driving a 11sec in a street car. Then a 10sec.. But 8? That is never happening.. 

[Jyrki]

https://www.youtube.com/embed/FzfYiqNMAdc

[Jyrki]

A couple of weeks ago I took the car to a test'n'tune in Alastaro. First 0.12sec after the launch was good, then it lost traction, I shifted to 2nd gear which broke immediately. Ooops.

Yesterday I received some pictures from 2015 

[ Attachment: You are not allowed to view attachments ]

[ Attachment: You are not allowed to view attachments ]

[vwhelmot]

Awesome Bug

[thehanz DVK]

impressive car , good numbers

[Jeff68]

^^^^^Those pictures are awesome! This is an incredible car! Congratulations and fantastic design and work on your car. What a machine! Loved reading the thread more than once about how you developed this car.

[Jyrki]

I guess it is time to continue the tradition and write the annual report 

After killing the Mendeola in May, I did not rush to make it to the next races in June. Not many races in July, so we aimed to make it to BRC Tierp. Kari fixed the transmission with a new mainshaft, and we tested that everything works driving around an industrial area – left some black marks there 

Bug Run Classic at Tierp was a really nice event. Track was good, weather was good and you could make as many passes as you wanted to. Same old story for me… I had to figure out what the clutch was doing (something totally new). After some tests it started to work consistently, and we did some decent passes with low boost. Then on the 6th pass the clutch locked 0.3sec into the run and the car made a huge wheelie. It still ran 9.13sec @247. After the pass I was afraid that coming down from the huge wheelie could have damaged to front shocks or wheelie bar mounts, so I just parked the car. Thanks to Tomi and my younger son for the help (he is 7)!

[ Attachment: You are not allowed to view attachments ]

We also had an issue with the trailer – the frame was broken. THANKS TO FREDDE & JOHAN for fabricating and delivering custom parts to fix it so we could make it back home safe!!!!!!!!

At home I checked the car – all good except for the front apron that was damaged bad. So I made the decision to make the trip to SCC Gardermoen. Travelling with Jukka, we took the Åbo-Stockholm ferry that arrived 6:10 Friday morning… so we were at Gardermoen in late afternoon. The SCC crew had arranged perfect depot area next to Espen, so we were able to (once again) combine our infrastructure.  Excellent chili con carne Friday evening.

It was so good to see all the Norwegian good friends, not to mention our good British friends.

The new track was a positive experience. It rained both nights, and the weather was really good during the days. In the previous years the water would have risen to the track from the ground, but not anymore - track was safe. Also the shutdown area was really good; on one pass the chute dropped under wheelie bars, but there was plenty of room to stop the car (speed was over 250km/h).

Car was spinning the tires in 1st and 2nd, and I was using the width of the track but it still felt it was under control, so during Saturday I worked the et down to 9.03sec. For Sunday we decided to try new launch tactics. It worked, but we ran out of time to make all the tests. Racing was open to 17:00,and my last pass was 17:00.22

https://youtu.be/DQp6-IwsOhM

Back home I checked the car, made some adjustments and test fired the engine. It dropped little oil under bellhousing. Flywheel seal  I am glad it happened after SCC, not at SCC… btw it was the original seal from the 90s 

I had a day off so I took the engine out and apart. Looked good, except for the seal. Afterwards I learnt that there would be one more race at Kjula… had I not taken it apart I could have swapped the seal and make one more attempt.

Well, even though I did not achieve any new records this season, I still feel it was good. BRC and SCC, several very low 9s, and the rush of pulling the chute at over 250km/h.

Goals for 2017: consistent passes, quicker et’s, what else?

[ Attachment: You are not allowed to view attachments ]

Jyrki

[LGK]

Nice report Jyrki thanks .

You're a real dedicated man chasing his target

Good luck!

steve

[alex d]

those are really impressive times....but coming from such a nice car makes it even better, keep it up!

[Jyrki]

Nice report Jyrki thanks .

You're a real dedicated man chasing his target

Good luck!

steve

Thanks.Well the (original) targets for the car were achieved last year 
so now it is just pure fun 
Jyrki

[BeetleBug]

so now it is just pure fun 
Jyrki

Thats usually when the ET starts to improve