Recent posts

#1

Fuel Injection / Re: MINI DIY Supercharged w/Ho...

Last post by tmsmini - Today at 08:36:44 AM

Cole went in another direction completely and it seems to be running well. I have not checked in lately though...

#2

Maintenance and Modifications / Re: Jet height HIF 44

Last post by bikewiz - May 26, 2024, 07:04:32 PM

You'll have 16 stations (can't remember if it's 1/16 or 1/8" incriminates) starting around station 10 is your WOT (wide open throttle) stations.  Work slowly by removing material from 10 gradually tapering down towards 16.  The last 3 or so stations do nothing.  Remove until you get yourself around 13:1 at full throttle through your entire rpm range.  Depending on your heads and cam, you may expect to see rich dips at lower rpms, about 3k rpms for myself it dips to around 11:1, but then works it's way back to 13:1.  Once you get your WOT air fuels in a safe mixture of 13:1, you can play with spring rates to dial in cruise air fuel.  Ideally you can get that 16:1 maximum fuel economy at light throttle cruise.  Use a lighter spring to get a leaner cruise.  Use a thicker dash pot oil to richen the mixture  in the transition from light throttle to full throttle if you have lean spikes and hesitation.

I'll work on the #10 to 16 sections of the needle. The book I have says it's 1/8" stations, I'll mark it all out before I spin it in the lathe an let you know how I make out. I plan on measuring the stations and recording them before I reinstall it so I have a new baseline needle.

#3

The Lounge / Re: F1 - 2024

Last post by MiniDave - May 26, 2024, 01:43:26 PM

Ha!

#4

The Lounge / Re: F1 - 2024

Last post by MiniDave - May 26, 2024, 01:20:01 PM

Monaco - the race that wasn't really a race. It was a 78 lap parade.....LeClerc could have done the "queen wave" all around the track as once the obligatory first lap wreck was cleaned up they were all in tire management mode. So, the first six finished in the order they started.....in fact, I think the top 10 finished in their starting order! Finishers 8-10 were a lap down, and 11-16 were two laps behind.

Sainz got lucky as he cut a tire very early on, and the wreck between the two HAAS cars and Perez meant they restarted the race in the original starting order as the back of the que hadn't completed one section of the track. Rules, ya know.

Once they turned him loose LeClerc put 8-9 seconds on second place Pastry in about the last 5 laps of the race, and that was it.

One highlight, we got to hear the Monaco Anthem, followed by the Italian - which is always a hit......such a happy sounding anthem compared to most, which sound like funeral dirges. Also, it was played by a real live band....none of this poxy recorded crap for the Prince! It was nice that Fred got to accept the trophy for Ferrari too.....

Because of Perez' poor performance, even tho Red Bull has won 5 races to Ferrari's 2, they are only 24 pts ahead in the constructor's, last year by this time they were running away with it.

#5

Maintenance and Modifications / Re: Jet height HIF 44

Last post by 94touring - May 24, 2024, 12:27:14 PM

You'll have 16 stations (can't remember if it's 1/16 or 1/8" incriminates) starting around station 10 is your WOT (wide open throttle) stations.  Work slowly by removing material from 10 gradually tapering down towards 16.  The last 3 or so stations do nothing.  Remove until you get yourself around 13:1 at full throttle through your entire rpm range.  Depending on your heads and cam, you may expect to see rich dips at lower rpms, about 3k rpms for myself it dips to around 11:1, but then works it's way back to 13:1.  Once you get your WOT air fuels in a safe mixture of 13:1, you can play with spring rates to dial in cruise air fuel.  Ideally you can get that 16:1 maximum fuel economy at light throttle cruise.  Use a lighter spring to get a leaner cruise.  Use a thicker dash pot oil to richen the mixture  in the transition from light throttle to full throttle if you have lean spikes and hesitation.

#6

Maintenance and Modifications / Re: Jet height HIF 44

Last post by 94touring - May 23, 2024, 07:52:19 PM

There's no point looking at the plugs, you have a wideband. I need rough throttle positions and the numbers to give advice.  If you're full throttle and 16:1, you'll melt pistons eventually.  Take it out in 3rd gear on a long straight road and at full throttle starting around 2k rpms, run it up to whatever your redline is and see how lean it is.  Myself personally I let off the throttle tuning once I hit 14s at full throttle.  Drive back to the shop and adjust/file needles, make jet changes, or redo fuel cells on the cars with programmable fuel injection.

#7

Maintenance and Modifications / Re: Jet height HIF 44

Last post by bikewiz - May 23, 2024, 07:31:31 PM

When you say accelerating, approximately how much throttle?  Is it hesitating at 16+ when you're at 70mph+?  Or is it a momentary lean spike?

So I drove it after work with some secondary roads and highway.
If you you just pin it in 4th at 70 it spikes lean and stumbles, I'm just not sure you would actually drive the car like that. If you accelerate "normal" to pass it leans to 16 or so but doesn't feel like it has a flat spot. It probably could be a little richer on the top to help that a little.
Most everywhere else it drives pretty good. I didn't have time to do a plug chop during the highway run to get a look at the plugs.
I have another BDL I could mod to see if I can get it better and save this modded BDL as a reference.

#8

Parts for sale/wanted / Re: MKI front license plate wa...

Last post by Whee - May 23, 2024, 11:42:57 AM

That looks really good.

#9

Maintenance and Modifications / Re: Jet height HIF 44

Last post by 94touring - May 23, 2024, 11:27:53 AM

When you say accelerating, approximately how much throttle?  Is it hesitating at 16+ when you're at 70mph+?  Or is it a momentary lean spike?

#10

Maintenance and Modifications / Re: Jet height HIF 44

Last post by bikewiz - May 23, 2024, 04:56:56 AM

What are the wide open throttle numbers?

I'll check as I drive it more.
I kind of wish I had mounted the gauge on the dash up higher in front of me so I don't need to look down when driving.