Search found 235 matches

by Woolfi
Mon Feb 25, 2019 11:08 pm
Forum: Series 3
Topic: Capacity and compression ratio increase
Replies: 20
Views: 875
Germany

Re: Capacity and compression ratio increase

"Ultimately I will be looking to to go to full EFI with coil packs etc but for now it may be a bottom end rebuild with the original carbs and ignition." The 6,0L HE-Motor has more displacement with a longer hub. A longer hub produces a torque curve with the maximum at lower revs. Maybe the solution ...
by Woolfi
Tue Jan 29, 2019 11:25 am
Forum: Series 3
Topic: V12 starting issues
Replies: 4
Views: 274
Germany

Re: V12 starting issues

Does the motor have a good idle when it is hot ? If the idle is good, there es no leak for air at the hoses.
If the motor pulls air through a hole, the idle is bad.
Regards Wolfgang Gatza
by Woolfi
Wed Jan 16, 2019 11:26 am
Forum: Series 3
Topic: Dayton wire wheels S3 roadster
Replies: 38
Views: 1383
Germany

Re: Dayton wire wheels S3 roadster

Can you write her in the forum, if the tire-flat foam has closed all leaks.
The leaks must be closed for a long time, when using the car.
by Woolfi
Fri Dec 21, 2018 1:35 pm
Forum: Technical
Topic: Electronic Ignition - carb ported vacuum versus manifold vacuum?
Replies: 8
Views: 987
Germany

Re: Electronic Ignition - carb ported vacuum versus manifold vacuum?

Roberts remarks about this are exatly 100% correct. If you use manifold vacuum, you have max vacuum at idle and therefore maximum advance at idle. If you have a 16 degreee capsule, you would have 10 plus 16 = 26 degree at idle. You would have a stumblingidle and therefore a very bad smell out of the...
by Woolfi
Wed Dec 19, 2018 5:13 pm
Forum: Technical
Topic: Gunson Colortune
Replies: 14
Views: 1013
Germany

Re: Gunson Colortune

"Again, I agree with Malcolm : XKs run best at a stoichiometric ratio of about 12.5 : 1 rather than the ideal ( weaker) 14 or so." ? ? ? 12,5 AFR at which level of power ? At iddle, lower part throttle or higher part throttle ? If you adjust the mixture for all 6 cylinders at IDLE to a AFR of 14,7 (...
by Woolfi
Wed Dec 12, 2018 3:45 pm
Forum: Technical
Topic: SU minutiae
Replies: 18
Views: 1512
Germany

Re: SU minutiae

"These are triple SU's on a 4.2l modified engine - cams, porting, big valves." 17 years ago I have made one big hole through the two silencers of my EV12. The back pressure was reduced. As a result I had a flat spot , when pressing the pedal suddenly to the floor from roundabout 1000 - 3000 rpm. Som...
by Woolfi
Fri Nov 16, 2018 11:18 am
Forum: Series 3
Topic: Series 3 carb removal
Replies: 11
Views: 813
Germany

Re: Series 3 carb removal

Easy solution: take a spare spanner (in german language is called "fork key" or "open mouth" key) and saw it short and grind the mouth slim. Drill a small hole at the end and make a thin 1 m long yarn at it. 5 minutes to work, if you have a saw and a grinder. With this special stromberg-tool I was a...
by Woolfi
Tue Nov 13, 2018 9:43 am
Forum: Series 3
Topic: Series 3 spark plugs colours
Replies: 19
Views: 1509
Germany

Re: Series 3 spark plugs colours

"Vacuum advance (vacuum direct from intake manifold)" This is WRONG. The vacuum has to be taken from a port at the carb, "called tappered edge". Few carbs have this port. For my EV12 I had to drill a port to one carb. The port has to end roundabout 1 - 3 mm in FRONT of the butterfly. If you presse t...
by Woolfi
Tue May 22, 2018 11:16 pm
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 32
Views: 2941
Germany

Re: Jumping and spitting under acceleration

"Some will vehemently insist that you MUST drill one carb to get so-called "ported vacuum" but I am just as convinced that is not necessary (unless you HAVE to meet certain emissions tests). I run my car with vacuum supplied directly from the manifolds and it runs fine under all circumstances." This...
by Woolfi
Mon May 14, 2018 8:57 pm
Forum: Series 3
Topic: Feeling a little low!
Replies: 17
Views: 1295
Germany

Re: Feeling a little low!

Sometimes the rear springs are "tired" and the car is low. My EV12 had this problem. I mounted 4 new GAZ shocks from Barratt with adjustable high. Now the car is roundabout 1,4" higher in the back than before and I have less ground touches than before.
Regards Wolfgang Gatza
by Woolfi
Mon Apr 23, 2018 4:40 pm
Forum: Series 3
Topic: Misfire and then stop until cool
Replies: 9
Views: 750
Germany

Re: Misfire and then stop until cool

A friend in Germany hat exactly the same proble last friday. Working and testig all saturday, he found a corroded cable connection in the ignition system. He cleaned this and all was okay.
Maybe this is also your problem, but this is far away to be shure.
Regards Wolfgang Gatza
by Woolfi
Wed Apr 18, 2018 7:32 am
Forum: Series 3
Topic: Ignition Amplifier
Replies: 12
Views: 1315
Germany

Re: Ignition Amplifier

In my car is the modern AB14 ignition amp plus a distributor from a HE-motor plus a drilling at one carb for the CORRECT vaccuum from a "tappered edge" piont to a advance capsule.
Result: no problems since 12 years with the ignition and a lower gas consumption at part throttle.
Regards Wolfgang Gatza
by Woolfi
Fri Apr 13, 2018 9:55 am
Forum: Series 3
Topic: Stomber v SU
Replies: 15
Views: 1654
Germany

Re: Stomber v SU

"The Strombergs are 1.75 inch compared to the 1.73 inch of the HIF44." This is not correct. The entrance of the Stromberg has only roundabout 41 mm instead of 1,75 x 2,54 = 44.45 mm. I was wondering, when I realised this the first time. The SU HD8 has 2,54 x 2, 00 = 50,8 mm. I don't know, why the S...
by Woolfi
Thu Apr 12, 2018 11:37 am
Forum: Series 3
Topic: Stomber v SU
Replies: 15
Views: 1654
Germany

Re: Stomber v SU

Hello John, you wrote in a former post: Hello there ! No difference in performance between SU's and Strombergs at all. I think, that there can be a small difference in power between the Stromberg carbs and the bigger SU HD8. But maybe the difference is smaler , than you can detect / feel when drivin...
by Woolfi
Sun Apr 08, 2018 8:10 pm
Forum: Series 3
Topic: Vacuum Pipes on series 3
Replies: 54
Views: 3844
Germany

Re: Vacuum Pipes on series 3

The disadvantages of this latter, of not using a “top-of-carb, throttle edge tapping”, is that there is vacuum advance when idling which may cause: • Car idling speed may (?) be unstable and relatively rough; • Yr car may (?) produce more pollutants when idling. • The advance vs load may not be idea...
by Woolfi
Fri Apr 06, 2018 4:31 pm
Forum: Series 3
Topic: Vacuum Pipes on series 3
Replies: 54
Views: 3844
Germany

Re: Vacuum Pipes on series 3

IF ( ? ? ? , you have to check this carefully !!! ) you have a advance unit, the advance unit is adding roundabout 16 or 24 degree of crank advance time to the pre-ignition at idle. You will have roundabout 16 or 24 degree of pre-ignition at idle, if the distributor is turned / fixed to zero degree ...
by Woolfi
Tue Apr 03, 2018 1:45 pm
Forum: Series 3
Topic: S3 V12 weber six pack carburettor set-up--any views?
Replies: 52
Views: 20700
Germany

Re: S3 V12 weber six pack carburettor set-up--any views?

In the magazine OCTANE 1/2018 is a big reprot aboiut the Daytone. In this magazin the wight is 1633 kg. Therefore 158 watts per kg.
My EV12 has exactly 1480 kg with half tank and without driver. If (???) my car has 310 DIN-hp, the watts per kg would be 154.
Regards Wolfgang Gatza
by Woolfi
Wed Mar 28, 2018 5:59 pm
Forum: Series 3
Topic: S3 V12 weber six pack carburettor set-up--any views?
Replies: 52
Views: 20700
Germany

Re: S3 V12 weber six pack carburettor set-up--any views?

Today I called my cousin and asked him for the race EV12 6,0L vs. Daytona. Immediately he was "on fire" to compare the acceleration of the cars between 50 km/h to roundabout 200 km/h (31mph to 124,3 mph) on a Autobahn. I will mount two cameras , make a video und put into youtube. I will post the lin...
by Woolfi
Thu Mar 22, 2018 3:54 pm
Forum: Series 3
Topic: S3 V12 weber six pack carburettor set-up--any views?
Replies: 52
Views: 20700
Germany

Re: S3 V12 weber six pack carburettor set-up--any views?

If an EV12 with injection is running with lambda 1,0 and a EV12 with carbs is running with Lambda 1,1 at part throttle, I don't believe, that the gas consumption of the injected car is lower. Driving in the city would be different. A long 2,88 diff and a 5th gear helps a lot to safe gas. At cruising...
by Woolfi
Wed Mar 21, 2018 8:49 am
Forum: Series 3
Topic: S3 V12 weber six pack carburettor set-up--any views?
Replies: 52
Views: 20700
Germany

Re: S3 V12 weber six pack carburettor set-up--any views?

1. 800 cfm seems to be a lot of carb for a EV12 motor with 6,0l. If the calculation say 509 CFM are okay, 800 are far above this. 2. If the temparature of the air into the airfilter is 45 C, there will be a noticable difference in power to the same motor, if he is breathing air of 25 C. 3. My car ha...