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by spag
Mon Jul 24, 2006 11:31 pm
Forum: Tuning Fuel and Air
Topic: Running a 4AGE with the TVIS removed
Replies: 6
Views: 823

Hi,

The 'gentle pottering' was maybe a bit of a lie - hence the (honest) :)

After a bit more serious mapping, it seems to drive really well, and pull happily from 1500 rpm. Perhaps having 200kg less car to drag around helps a bit with that one !!!

If I can find someone local (& cheap) who can ...
by spag
Thu Jul 20, 2006 8:50 am
Forum: Tuning Fuel and Air
Topic: Running a 4AGE with the TVIS removed
Replies: 6
Views: 823

After 100 miles of gentle pottering (honest) I really haven't found there to be a big black hole in the low torque without the TVIS stuffs, so will probably run as is for a while longer.

Hopefully get things mapped properly in the next few days using the LC-1, so will see when it's driven a bit ...
by spag
Mon Jul 03, 2006 2:34 pm
Forum: Tuning Fuel and Air
Topic: Running a 4AGE with the TVIS removed
Replies: 6
Views: 823

I've already removed it as part of the 'speed build' but was wondering if I'll really need it in the long run.

I pulled out the locator rings, and just added some spacers to the bolts so it's easily reversible.

http://www.spagweb.com/gallery/ed_06_mr_ed

I guess I just need to drive it to see :D
by spag
Mon Jul 03, 2006 8:25 am
Forum: Tuning Fuel and Air
Topic: Running a 4AGE with the TVIS removed
Replies: 6
Views: 823

Running a 4AGE with the TVIS removed

Hi, anyone got any experience of running a large port 4AGE with the TVIS plate removed (or butterflys permanently open) ?

It shouldn't be hard to tune around it , but wondering if it would be better to shorten the manifold a little so the TVIS can be left in.

(Mini install so fairly tight engine ...
by spag
Mon Apr 25, 2005 6:06 am
Forum: Injectors, Fuel & Air Supply
Topic: Mini 3 Port Injection
Replies: 86
Views: 8762

Shirly 2 TBs is going to fuel differently to 2 carbs because with a TB the fuel appears when the ECU says 'squirt', but with a carb the fuel appears when the inlet port opens and the fuel is 'sucked' out.

By my feeble reckoning you could get away with pretty uneven spacing between 'suck' events and ...
by spag
Thu Mar 17, 2005 6:09 am
Forum: Injectors, Fuel & Air Supply
Topic: Motorcycle, Snow-Mobile & Car Throttle Specs and Pics
Replies: 54
Views: 37488

Waxstat... I didn't spot that, is that the thing I think is a vac jobby, with 2 hose fittings on the end ??

Oooo, just taken it to bits, and yep it's a waxstat. :shock:

With all the other vac plumbing I got confused.

Easy for the cold/warm idle thing, but not so good for idle control - sorry :(
by spag
Thu Mar 17, 2005 5:29 am
Forum: Injectors, Fuel & Air Supply
Topic: Motorcycle, Snow-Mobile & Car Throttle Specs and Pics
Replies: 54
Views: 37488

I don't know if these will be the same, but on my CBR929 TBs there is an airbleed valve built into each body. They are all operated by a long shaft with 'fingers' the press each valve. There is a thumbwheel adjuster to set idle speed and a vac thing that also operates on it.

Should be fine to leave ...

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