Any news?
westi wrote:That's mad Alan.
very interested
Mega Buck Bonanza Brought To An Early Finish
Saturday, 23 June 2007 -
http://www.wsid.com.au/default.asp?Page=Article&ID=634
😂🤪😂🤪😂
car forums. where a lot of peoples good intentions end up taking a good old car off the road forever never ever to see the road again. 🥲
Well I made it to the race to find out that the engine lid hits on the velocity stacks . I am a little disapointed with the performmance of the car as I only had one run without the engine lid and finished up with a 10.91 @ 118.16 mph . The car still has the turbo gearing and seemed to fall over when I shifted into 4th gear . I had launched @ 6600 rpm on the 2 step and with a track temp of 0 deg still ran a 1.47 60 ft time . Half track was a 6.86 @ 98.46 mph and the car is easy to drive . I even had time to look at the oil pressure guage after shifting into 3rd gear and I crossed the finish line at 6000 revs . I went to start the engine for the 2nd run to find a clutch/flywheel or starter problem . I will now pull the engine and find out the cause of the problem and change the box with the spare as the ratios will be better suited to the engine . I will run the car again in about 6 weeks time , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
Gee, half a second off the national record on your first run! That's hardly disappointing. I'm sure you'll smash the record when you get the it sorted. Top stuff.
If you found it slow compared to your turbo set-up perhaps you could install a cup holder in the cabin?
Then you could smash the record while drinking a cafe latte!
CYA CT
esratrams
Yes that is a good result for Rod,
on his first run down the track in what seems like years.
The time does not yet show the HP potential of this combo YET,
and even with the extra 50 lbs of weight Rod will need,
it will still be enough to put his name there in the tube chassis 'Sport Compact Group All Motor' records List.
(no current record listed in that class)
Rod told me the car weighed 1308 lbs, plus 242lbs for rod.
The current Andra record for 'SS/C' is 10.38, and there is no minimum weight for this.
From what Rod has told me this is one record that is well in his sights,
and it will be nice to see it back in Australian hands.
Rod ran a 60 foot time of 1.47 which is pretty impressive considering the turbo gearing,
and only a tenth or so slower than his turbo car!
I am really looking forward to seeing this car run in person again.
westi wrote:That's mad Alan.
Well , I finally got a chance to pull the engine out to find out what went wrong . It looks like at this stage that I have a collapsed rear main bearing causing the flywheel to run out of centre and clearance the bellhousing . Due to this problem the starter had not meshed into the flywheel , but instead ground the top of the teeth off the ring gear . I will now once again strip the engine and fit a new set of main bearings . These bearings are not real old and at this stage I have no idea what caused this to happen . The flywheel has 6 times the end float that I started with , and I can move the crank sideways while it is still in the case . I have 9 days until I am on the dyno again for a test before running at a test and tune on Sunday 22 July . I will also replace the transmission with the spare as the ratio's have been changed . ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
All the best for the re-rebuild Rod. Although please don't feel obliged to divulge the information, but what sort of ratios will you be using in your spare tranny?
Also what does that mean for your flywheel? Can you replace the ring gear alone? (forgive my rookie question - have to ask silly questions sometimes to learn more!)
Alan
Were those KS flanged bearings,
or the made ones by Scat, Rodney?
westi wrote:That's mad Alan.
The spare tranny has the following ratio's , 4.57 r&p - 3.55 - 2.21 - 1.44 - 1.21 , with a 28'' tyre . the other tranny I ran had a 4.57 r&p - 3.13 - 2.06 - 1.26 - .95 with a 28'' tyre . I have worked out now that I should cross the line in 4th @ 8000 rpm =120mph , 8300= 125 , 8600 = 129 , 8900 = 133 .
The main bearings were a set of ks that were cut by Shawn and had done 3-4 passes as well as dyno time . I had the engine balanced after the cam breakage and am at a loss at this stage on the cause . I have had this happen years ago with a set of scat mains that were a shitty set , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
http://www.4secondsflat.com/Thrust_bearing_failures.html
Make sure you have 8 thou end float and 3 thou journal clearance...minimums.
Also chamfer the parting faces as shown in the above link.
I personally go right across to stop the oil from being scraped off the journal.
This step is sometimes forgotten when bearings are made from a VW one piece one.
Most cars with factory split mains have more clearance at the parting line built in to them, but not VW(except the center main that is split).
Optimum would be to buy 3 sets of bearings to use ALL MAINS with the split steelbacked shells,
and then use separate thrust washers (toyota or VW) like Keith has done in his engine.
Hope this helps.
westi wrote:That's mad Alan.
westi wrote:That's mad Alan.
I have had a big weekend and the engine in now rebuilt and in , the transmission has been changed and I am on the dyno 8.00 am Wednesday . The rear main bearing has been destroyed to the point of having .040 of thrust movement . This movement was between the case and the bearing with the bearing having all the wear . The case was still in reasonably good condition with a little bit of machine work required to clean up the rear main seal seating surface . The bearing also had .040 vertical wear and .060 horizontal wear thus causing the flange to mark the rear of the case . I have no idea of what caused this as the bearings where ks brand and not real old . I have taken over 4 hrs to modify a new bearing set to fit the case . The case was out of round by about 1/2 - 1/4 of a thuosands of an inch . The thrust area had survived and the new bearing now has .008 end float with .004 of crank to bearing clearance . I have modified the rear thrust of the bearing to allow more oiling , changed back to a 4 puck and stage 3 Kennedy plate , and will let you know the dyno results soon , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
RodPenrose wrote:I have had a big weekend and the engine in now rebuilt and in , the transmission has been changed and I am on the dyno 8.00 am Wednesday .
How'd it go dude?!
westi wrote:That's mad Alan.
After a few runs on the dyno I had oil pressure issues and decided not to risk hurting the engine . It was dynoed in 4th gear with the new transmission and only made 222 hp at the wheels . I am a little dissapointed but this was at a lower rpm , different tyres , different ratio , and a different fuel . I have checked the oil filter to find a lot of aluminium specs that I have no idea where from , maybe I didn't clean all of the oiling system good enough. The oil pressure issue is gone and I think it was due to excessive heat { 250 deg } . I have removed the engine to check the end float and bearing wear , and will reset the clutch . All looks good at this stage and I will run the car on Sunday at WSID . I have had to change from the extreme nos fuel to the new supreme nos blend and at this stage I don't think it is as good , however I have just spent $ 2000 on a drum , so I will use it , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
RodPenrose wrote:All looks good at this stage and I will run the car on Sunday at WSID .
I hope all went well for you dude?
westi wrote:That's mad Alan.
10.65 @ 118 mph . I will down load the data and let you know , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
Awesome...where's the mph?
1/2 track should tell some stories.
westi wrote:That's mad Alan.
I haven't had a chance to download the on-board data as yet but here is the run down ,
1st run 20 psi tyres , 1.53 @ the 60 ft , 6.90 @ 100.6 mph at half track and 10.85 @ 116.41 mph . RESULT- no data , heaps of wheel spin or clutch slip , hitting rev limiter all the way down , and on and off throttle . Rev limiter was set at 8800 but only showed 8400 on the taco .
2nd run 15 psi tyres , 1.47 @ the 60 ft , 6.88 @ 98.48 mph at half track and 10.82 @ 117.82 mph . RESULT - no data , heaps of wheel spin or clutch slip , hitting rev limiter all the way down , on and off throttle . Rev limiter was set at 9300 but only showed 8400 on the taco .
3rd run 12 psi tyres , 1.45 @ the 60 ft , 6.73 @ 101.5 mph at half track and 10.67 @ 118.53 mph . RESULT - not as yet retrieved the data , no wheel spin or clutch slip , shut engine down 200 ft before finish as rev limiter was active . I am finally happy with the result as I did not adjust or play with the car all day . I have no oil leaks or any engine problems in any way and the car is so easy to drive . I do think I have a problem with the new digital MSD ignition control box as the rev limiter is activating far too early and I cannot use all the available revs . I will remove the MSD for repairs and will be back at WSID in 4 weeks , ROD.
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au
I've had issues with an MSD DIS4 behaving in a simular way. It turned out to not be the rev limitor but was to do with the input signaling from the ECU that was telling the MSD to fire.
In my case all I had to do was adjust the coil charge and discharge time for the ecu to solve the issue, so although your not using and ecu, adjusting the dwell of your ignition trigger is worth a shot.
Well done Rod - congratulations thus far. Glad to see you finished without any major dramas!
RodPenrose wrote:.... but only showed 8400 on the taco .
.....118.53 mph . RESULT - not as yet retrieved the data , no wheel spin or clutch slip , shut engine down 200 ft before finish as rev limiter was active . I am finally happy with the result as I did not adjust or play with the car all day . I have no oil leaks or any engine problems in any way and the car is so easy to drive . I do think I have a problem with the new digital MSD ignition control box as the rev limiter is activating far too early and I cannot use all the available revs . I will remove the MSD for repairs and will be back at WSID in 4 weeks , ROD.
Lots of great info there rodney.
there is at least another tenth and 5mph in that car with the current power...EDIT:
2 tenths and 10mph if 222 RWHP and 1550lbs.
My sums say with 28" tyre and 4.857 diff with 1.217 fourth gear equals 8407 rpm at 118.53mph.
As for the MSD, I would double check that it is not just a low current supply from the battery.
Those MSD systems draw quite a current, and so low battery supply may still start the car, but lack spark energy under higher load.
Alternator in your future?!
Congratulations on a great effort to get the car done.
[ Edited on 23-7-2007 by dangerous ]
westi wrote:That's mad Alan.
By the way,
are you aware that that is the quickest ET ever run by and Australian VW (normally aspirated)?!
Great effort!
westi wrote:That's mad Alan.
great report Rod...will we see it at the Qld Jamboree
Seems like congratulations are in order Rod.... now I see why you have been so busy. Well done :thumb
Well done Rod:thumb
past month has not been that great to you has it.