Seicento Chalky, 1.4 16v ITB Seicento.

[craigb244]

I have a feeling that the thermostat hasn't sealed properly. I'm using the tjet stat and that opens up early at 88 degrees, and set the fan on the omex to kick in at 90 degrees and to continue cooling until 85 dgrees has been reached.

id change that.

I have mine set at 85ish with a 1degree hysteresis.

the fans can stay on for a good few mins in hot weather so dread to think how long it would take your fans to turn off when trying to drop the temp by 5degrees.

it will be fighting against the thermostat also.

AND having the engine temps fluctuate 5degrees wont be good for it... you need it to stay as constant as possible (hence why all modern cars and even your sei has the ecu control the fans rather then the rad switch)

 

[Todger182]

I got anoyed with my cooling system not bleeding out this morning and reset my rad fan to kick in at 95 then off at 90.

Will probably drop it lower when i get the car back on thursday.

Thanks

X

 

[Todger182]

First and possibly last show of the year with chalky. Thought it was worth sharing some photo's with you all.

Enjoy:

Thanks

X

 

[blu73]

She is looking Fiine fella, love the new look, much better

 

[NosherCento]

Bonnet bra and door handles look good

Love the wheels, SELL THEM TO ME.
not sure on the rearlights though, look a bit weird compared to how euro and flush the rest of the car looks...

Maybe try splitting open the lexarse lights and spraying all of the chrome black, then a light tint on the glass?

 

[dronenrs]

havent been on here for a while.. nice to see you finally pushed through and got the engine in and working car looks fantastic

 

[Reuuk]

lookin good fella! engine all sorted now ?

 

[randomizered]

Sounds ace. A 'lil on the loud side internally

 

[Reuuk]

That sounds bloody mean!

 

[Whiley]

sounds really nice

 

[craigk]

sounds bloody sweet mate, lovly work

 

[Todger182]

One problem after another with this thing.

Secondary butterfly holes blanked up so now throttle response is on it . Downside I have somehow made my throttle want to stick more, so now i'm trying to find a method of fixing that. So far I have thought about replacing all the springs with the ZX10R ones (seem a bit bigger and slightly more heavy duty).

My theory is the butterfly isn't returning properly because these ITB's were only designed for a 600cc bike, and i'm running them on a 1368cc so suction is considerably more. Thus the flowing air is holding the bodies open and not allowing it to return.

Second method I have considered is fitting a spring onto the back of the pedal to the pedal box that will force the wholse thing to return.

Oh and coolant issue has been found, the manifold wasn't sealing properly and also there was a split in the hose for the manifold.

Thanks

X

 

[randomizered]

Only 600cc, but a hell of a lot more revs so that won't b the issue.

 

[Todger182]

Only other option is to rebuild the bodies with new bearings and springs anyway.

Thanks

X

 

[craigb244]

it wont be a problem with to much vacume. if you look at how butterfly's work there with be half the vac trying to suck the valve open while the other side it been sucked shut. that means its canceled out and it purely shut by the spring.

flat slide bodies are a different matter as a lot of suction will cause more friction on the slide sealing area... i know as i had a large flat slide on my supermoto that even after rebuilding the carb with new parts and expensive teflon slide would still stick open a little unless the throttle was snapped shut.


I think your problem is the fact that the bike had a smooth running throttle and a throttle cable about 8inches long.

while you have a heavy throttle peddle (been pulled down by gravity) a 5foot (and maybe XXyears old cable)

Id say fit a spring on the throttle peddle and see if that helps. if not then ALSO fit another spring on the throttle body side.

 

[Todger182]

It's a new cable and outer linear sleeve so the cable is nice and free.

I think it's suction because the problem can't be recreated with the engine off, it just snaps shut as it should.

Going to try a spring on the pedal first but not until next week now as I just want a break from working on the car .

Thanks

X

 

[Todger182]

Car was on the road for 2 weeks, it's now back off until next year. This is mainly due to funding as i'm completely dry in terms of the imaginary money well.

The engine is going to be stripped back down again over this period and coreplugs replaced and also fit a new head gasket (don't want to take any chances with this). The constant water loss was due to a dead coreplug behind the flywheel DOH!!.

I'm going to repaint things whilst I have it all aprt, also going to be doing another valver conversion and chassis rebuild on shoebox (pirus' sei). I should start up my own garage at home doing these conversions for people .

Tried to start her up today to get some oil moving and to take her round the block to un stick the brakes, only to find..... Fuel pump has crapped out and is kicking in but not creating any pressure. That will need replacing now aswell. Wonder if i can retrofit the ZX6R fuel pump in .

Anyway until I have finished pirus' sei, there won't be any updates on chalky because I won't be able to work on her .

Thanks

X

 

[blu73]

I should start up my own garage at home doing these conversions for people .

LOL, don't say that, you'll be inlandated with messages. Although i gotta say i probably would be interested myself, always fancied a 16v but just can't be bothered to make one

 

[ycming]

Man hope you get it back up as soon as man!

Blu bring the black cinq up to glasgow, we'll have it sorted lol

 

[blu73]

lol ming, i might just take you up on that one day so watchout!! Black cinq has a buyer already though so it won't be that one...