drop in RPM

[CMF_Glenj]

Ok had a little run for the first time since HG change and few other bits done in the track car(see other posts)

When flat out in 1st it seemed to drop revs then pick back up again half way through ( tryd to make a vid of it but again not to sure if you can hear what i mean)

Any thoughts

Cheers

 

[CMF_Doom]

Plugs, fuel filter etc?

 

[CMF_Glenj]

Cheers bud will be looking into that today, i have read on here and MSC that the rev limiter prob kicks in around then, could it be this?

 

[CMF_frank2]

the limiter should cut in at 6.9k ish glen

 

[CMF_Glenj]

Na it dropped before that then kinda kicked back it to the limiter was strange!

I taped up the hole on the disk in the dizzy and this seemed to cure while also seemed to rev quicker (could just be me tho)

Think i need to start again here tho, tape back off few runs to see if does it again and try to sort the problem

 

[CMF_Glenj]

@Frank... on your videos with and without limiter, with the limiter it looked like it kinda stuttered probably around where i am experiencing this, is this right?

 

[CMF_frank2]

the limiter cuts the injectors glen, you should feel it holding back when it happens

 

[CMF_Glenj]

frank2 WROTE:

"the limiter cuts the injectors glen, you should feel it holding back when it happens

yeah bud would it be a very noticeable drop if foot was too the floor?

 

[CMF_frank2]

Glenj WROTE:

yeah bud would it be a very noticeable drop if foot was too the floor?

yeh, it feels like someone has cut the engine

 

[CMF_Glenj]

do all 1.0 do this?

so the way round this is to cover the hole on the disk in the dizzy?

^ if this is the case is there any other way of blocking/turning off the limiter instead of tape (where prying eyes can see

 

[CMF_frank2]

all k11,s yeh
nistune daughterboard ?

 

[CMF_Glenj]

frank2 WROTE:

"all k11,s yeh

nistune daughterboard ?

good good
Hope your talking code to me there Frank cos i think i understand if your are hahhaha

 

[CMF_frank2]

aye, when Ed from MSC installed my tubby map, he asked me what rev limit i wanted

 

[CMF_frank2]

Glenj WROTE:

"do all 1.0 do this?

so the way round this is to cover the hole on the disk in the dizzy?

^ if this is the case is there any other way of blocking/turning off the limiter instead of tape (where prying eyes can see

there appears to be another option glen, the fsm says that
"the engine speed is detected by measuring the time the slit needs to pass the optical sensor"
so when i shortened the slots to test this my tacho ran at about 2 x normal.
i then removed the 3 tapes and left just the cyl#1 on......still the same.
so this probably explains why when i extended the cyl# 1 slot on my old 1.0 engine in the red car, that it valvebounced before the 6900 limiter kicked in (ie, the tacho was under-reading because of the extended slot, and was probably revving @ 8k+ !)