29 replies to this topic

[Elfin]

hello all

Have supercharged my 1400 engine and is now running lumpy and cutts out i am thinking mixture and / or timing, but will let you know soon as i am getting it looked out

On another note i have changed the clutch to a verto turbo clutch and this is slipping i would have thought this clutch as was recommended this would be able to with stand the power??

the charger is a jonspeed eaton charger with 13/4" single carb..

really i am looking for advice etc..... anything to help



thanks in advance

[Sammy D]

What needle is in the carb?

Could be lean, you don't want to be melting a piston. Try something rich, like a BBZ. Also, whats your fuel pressure?

Pre verto is generally better, I have a fibre rally spec plate and a grey diaphragm and it never slips.

[Wil_h]

A normal verto clutch will at best cope with maybe 110 to 120 bhp with a similar level of torque. At a guess you'll be right on the limit of its ability.

However, I bought a new clutch kit after mine started slipping, and it slipped more. After much scratching of heads I finally worked out that the newly supplied spring was very weak.

I pulled out all my old springs and found the strongest (the method I used was standing on them) only one would not move when i stood on it. I used this one and had no problems. It seems that there is a BIG inconsistency in the spring rates of verto springs.

[Elfin]

thanks for the replys

i am not sure what needle is in atm, i have a feeling it is running rich on tickover hence leaving standing it eventually dropps revs and stalls
it runs reasonably well when running at the moment until slowing down comes into play, as the other day slowed down clutch in to stop and stalled.
also leaving the choke on to warm up it seems to clog up and i have to rev it a tad to about 2 thou until it clears...........

i am also a bit conserned over running temp, it used to over heat, but at the moment (about 6c over here) it runs a tad above 80c but when left tick over it creeps up .... i have a 4 core rad which i had with the 1400 STD engine

i have fitted a kenlowe elecric fan which works until i connect the sensor it comes with and then it dosnt cut in ... i have a thermostat blanking sleeve which i was reccomended that i have fitted


Im wishing i stayed with a twin carb setup now.........

[Elfin]

I have a facet fuel pump 5psi i think the silver top...........

[miRon]

you could get an auxilary rad with a small fan if need be,
i use an old heater matrix tucked up in side the wing seems to work well,
or put your heater on if you have to be sat still as this will get rid of some heat,

or dont run a bonnet.....lol
i drove to newquay without one kept it cool

[FartinMartin]

leaving standing it eventually dropps revs and stalls

Is this the one where the carb sits lower than the inlet manifold?

I was talking to a RR guy the other month and he was saying that type will always have problems as the engine is trying to Suck the mixture up bank, and when idleing there isnt a lot of suction and they will not run right

[Elfin]

that sounds correct i guess, but what would/could you do if that is the case?

I do have a vent in my bonnet..not that it is cut out but i could do so to keep it cooler if need be

[Blitz-Voodoo]

What bhp are you looking for?

[Elfin]

any at the moment as long as it runs sweet to be honest.....

[Elfin]

Something else has been bothering me as well .....
Is it possible to have to many breathers????

[THE STIG]

I have a facet fuel pump 5psi i think the silver top...........

you need max of 3 psi fuel pressure to much just floods the carb and causes low end fueling problems

have had 2 supercharger kits one vmax one jonspeed

ran stardard turbo verto clutches on both never had any clutch slip lowest bhp was 111.8 and 106flb toqure at the wheels

ran a 74 degree thermost temp int traffic with a 2 core rad and normal fan never went over 92 cel

have my original set up sheet some where if you want a copy of it

[Elfin]

So would a regulator be in order to slow the pressure down?
Just curious why did you go for two different ones? any difference.....

the clutch slipping could be the bloody orange seal but i wont know until its appart...

What do you mean by setup sheet, well yeah if you could send it or what ever that would be help full i am sure, im just getting to the point where it needs to be sorted rather than fannying about with it

[THE STIG]

So would a regulator be in order to slow the pressure down?
Just curious why did you go for two different ones? any difference.....

the clutch slipping could be the bloody orange seal but i wont know until its appart...

What do you mean by setup sheet, well yeah if you could send it or what ever that would be help full i am sure, im just getting to the point where it needs to be sorted rather than fannying about with it

i had a switchable reg worked fine

built it ran it sold it ,built another ran it sold it, no differance exept price and got a reply etc from jonspeed but not from vmax

now building a third one of my own

will find it out and post it up

[Grahamxx]

So would a regulator be in order to slow the pressure down?
Just curious why did you go for two different ones? any difference.....

the clutch slipping could be the bloody orange seal but i wont know until its appart...

What do you mean by setup sheet, well yeah if you could send it or what ever that would be help full i am sure, im just getting to the point where it needs to be sorted rather than fannying about with it

i had a switchable reg worked fine

built it ran it sold it ,built another ran it sold it, no differance exept price and got a reply etc from jonspeed but not from vmax

now building a third one of my own

will find it out and post it up

What mods do you have to make to the supercharger?, do you have any pictures you would share??...