hey Wayne, how about some specs on your engine , Trans, & weight of your car? Is 105 mph your best? Not many good Type 4s out there.
westi wrote:That's mad Alan.
105mph is the best that the car has run . It does a 1.6sec 60 foot and 88mph at half track then runs out of legs . As I had mentioned previously it is geared and set-up for hillclimbs only . The car weighs 800kg and is balanced front to rear 39/61% , much better than stock . It still runs a swing-axle transmission with 4.125 ring and pinion ,albins gears 4.11 / 2.21 / 1.59 /1.17 . a ZF limited slip diff , berg chromemoly axles and side plate strengtheners . Still using the stock vw transaxle housing though . Wheels are 16"x11.5" rear and 15"x10" front with avon hillclimb slicks . Engine is 2842ml . 82mm fullcircle bernie bergmann crank , chev journal chromemoly H-beam rods , JE 105mm forged pistons , total seal rings , cam is a modified special grind 320degree .534" lift , berg type-1 valvetrain equipment , origional kombi heads modified 48mm intakes and 38mm exhaust (extensively ported) feeding the avgas into the engine is quad throttle bodies in IDA pattern with microtec injection . Dry-sumped for high speed cornering and transfering drive to the transmission is a stage-4 kennedy ductile 3000lb pressure plate and a berg 3-puk disc .:vader
Team
FASTEST ET @ WARWICK 2010 & 2011
FASTEST SPEED @ WARWICK 2011
FASTEST ET & SPEED WSID 2012
PB - 6.33@113.07(1/8) & 9.88@135(1/4)
Thanks for responding Wayne, lots of good info there! Perhaps some other people can list their specs..including weight and best MPH ...Blacktop dynos rule!
westi wrote:That's mad Alan.
wow sounds hectic! what HP you making at the wheels? dry sumps the way to go!!
Alex Holzl wrote:wow sounds hectic! what HP you making at the wheels? dry sumps the way to go!!
last dyno report showed 181bhp at the rear wheels in 4th gear and 1062lbs of tractive effort . Will keep you informed and post new figures when the turbo /intercooler installation is completed . You will be able to see it run at the VW nationals .:bounce:bounce:bounce
Team
FASTEST ET @ WARWICK 2010 & 2011
FASTEST SPEED @ WARWICK 2011
FASTEST ET & SPEED WSID 2012
PB - 6.33@113.07(1/8) & 9.88@135(1/4)
image problem sorry .:cry
Team
FASTEST ET @ WARWICK 2010 & 2011
FASTEST SPEED @ WARWICK 2011
FASTEST ET & SPEED WSID 2012
PB - 6.33@113.07(1/8) & 9.88@135(1/4)
A nice HP reading you have!! will be balistic with the turbo! The tractive effort is huge!! i was pretty happy with my 900lbs. will be good to see it race again
alex
So Wayne, all in all a pretty cheap engine (not).
Well done on a top motor.
It has been pretty reliable I guess.
With that much torque , does it tend to snap out of control?
I imagine a squirt of the throttle at the wrong time would see you looking back at where you came from.
Regards,Glenn>
I find with the injection it is very smooth and controlable to drive and having so much sticky rubber on the road tends to keep everything pointing in the right direction , however there has been a few incidents where things have gone just wrong !! at a hillclimb meet in grafton 2003 I went out in practice to find that the trans had started to jump out of 2nd gear . I made a very wrong decision when racing started , and that was to hold it in 2nd through the tight windey section of the race track and steer with one hand . I hadn't counted on the bug leaping sideways as I exited this section jumping on the throttle and couldn't pull enough lock with one hand to correct it . The bug ploughed a tyre wall then crossed the track and made heavy contact with another , not happy to damage just one side !! The results were , rear bumper torn off and broken in half -- both rear guards torn off -- both running boards broken -- engine lid broken -- minor impact on r/h thottle bodys -- 3" exhaust totally flat at middle of system -- both rear axles bent . With the help of a couple other competitors we did enough repairs to the bug to get it back on the track , set another new track record and won the 2litre to 3litre sports sedan class beating 3 rivals . not a bad effort ey!!:blah:blah
Team
FASTEST ET @ WARWICK 2010 & 2011
FASTEST SPEED @ WARWICK 2011
FASTEST ET & SPEED WSID 2012
PB - 6.33@113.07(1/8) & 9.88@135(1/4)
Big effort, but justly rewarded.!
Regards,Glenn>
Top motor, I am in the process of putting a t4 into an oval (2.5lt) Where do you go to get decent hp out of your heads?
Cheers
Graeme
Graeme wrote:Top motor, I am in the process of putting a t4 into an oval (2.5lt) Where do you go to get decent hp out of your heads?
Cheers
Graeme
hi graeme , I do my own head mods including big valves , porting & polishing , chamber reshaping etc . The heads I am using on the 2.9litre engine are still the exact same pair of heads that I did for the drag bug in 1994 ( they are now over 10 years old and still going strong ) when we origionally put the 2.5litre drag bug on the dyno it was running on alcohol and showed 272bhp at the rear wheels before the stock tyres broke traction on the rollers and smoked out the TAFE college . I am currently doing a new set with bigger titanium valves , chev springs & a few more mods . for any further info call me on 02-42725644 .:bounce
Team
FASTEST ET @ WARWICK 2010 & 2011
FASTEST SPEED @ WARWICK 2011
FASTEST ET & SPEED WSID 2012
PB - 6.33@113.07(1/8) & 9.88@135(1/4)
when you were using the 2.5l, you were using the standard crank were you? what mm stroke was it?
are 105mm pistons the biggest you can fit in a type 4 case?
pete wood wrote:when you were using the 2.5l, you were using the standard crank were you? what mm stroke was it?
are 105mm pistons the biggest you can fit in a type 4 case?
I was using a stock 71mm stroke 2litre crank that had been very well balanced . Back then I was spinning the engine to 8,600rpm .( for more details check out
www.wpvw.com.au ) The 105mm piston kit is the biggest kit available off the shelf for a type-4 engine , however I do have a set of 105.25mm pistons & barrels , but the cylinder wall thickness is very thin .:blah:blah
Team
FASTEST ET @ WARWICK 2010 & 2011
FASTEST SPEED @ WARWICK 2011
FASTEST ET & SPEED WSID 2012
PB - 6.33@113.07(1/8) & 9.88@135(1/4)
Cheers for the info! I will be stripping my t4 motor down a little later in the year and converting it to injection, so i will probabbly contact you about 'cleaning-up' the heads, and what the best cam, compression etc would be, if thats ok.
:thumb
Graeme
