Car bogs in the corners, road race.

[Rokker]

We where going from 0 to 100mph in a closed piece of road a long way from any public. Not a biggie to me... Sounded worse I guess.

What features does the sending unit offer ?

The tank needs to go down anyway for the mini sump anyway, adding a venting Hole in the filler neck would be the easy part..

I run a autometer fuel level float to the autometer fuel gauge not the stock one in the dash.

[wmhjr]

Originally Posted by Rokker

We where going from 0 to 100mph in a closed piece of road a long way from any public. Not a biggie to me... Sounded worse I guess.

What features does the sending unit offer ?

The tank needs to go down anyway for the mini sump anyway, adding a venting Hole in the filler neck would be the easy part..

I run a autometer fuel level float to the autometer fuel gauge not the stock one in the dash.

Like I said, I'm trying to stay away from the street racing thing. There is no such thing as a "closed piece of road" that you can control access to preventing accidental animals, hikers, bicyclists, etc from getting there - and unless you personally own it, you're taking chances with other peoples property and lives. I'll stop there though there is a LOT more that could be said with no possible excuse. Maybe I'm a little sensitive about it because I live in a rural area, and there are all kinds of nitwits who think that because it's the "country" they can drive however they want with a total disregard for other people. Nothing like being on a tractor along a quiet road and having some dbag out of control come flying up, fishtailing trying to slow down and honking their horn because they think YOU are creating the unsafe situation. And it's those dbags that make it more difficult for the rest of us. Thank them for more and more laws making our hobby more difficult than it already is. Nuff said about that.

Anyway, the sending unit has better pickups, is high quality machined billet, can have -AN fittings, provide your volumes and vents, etc. If you're not running FI, sumping is simply not necessary assuming the remainder of your fuel system is properly setup. I have seen where people making their own sump ended up causing them problems because they didn't anticipate where the fuel would actually be in different scenarios. It's tougher for a car in the twisties than a drag car.

[Rokker]

Here´s a video from that day. After we had autocrossed all day we took the cones away. Lined up two and two cars. I raced a turbocharged 944 and lost as my car was giving up in second gear. The stalling might actually be from this very issue, but I have since changed the carb and given it more initial timing so I think actually this was more because of flooding from the secondaries. Not at all sure though, seems like I´m on the motor for long enough time to empty the bowls even here...

Not bragging about the driving or anything, but showing the scenary so you can cut me some slack, it´s not exactly like we trying to provoke any tractoring farmers.

https://www.youtube.com/watch?v=t-CSdcsFKTw

What is better pickups ? It´s just a pipe going in there that has a 1/2" wide hole in it, maybe without the sock I understand the stock system has ?

I´ll consider it though, it´s more a budget situation rather than what I like. A nut with 1/2" or wider to an 8an or 10an in the bottom rear and middle of the tank would seem to be an ok plave to put it to me. That´s about where the "stock sending" unit is picking up anyway right. If it doesn´t work I´ll plug it and get the $$ sending unit.

[orangevert]

I had a 950 Prosystems and if I braked really hard with it. it would want to bog out as well.

[Rokker]

Going road racing tomorrow so the new fuel pump got temporarily installed.
Engine compartment is done. Thank you guys for all the help !

I´m planning to open my fuel tank in the winter, make a room with baffles to keep the fuel available, on acc, deac, and lateral movement. Four baffles. And will use a 1/2" tube in the stock pickup. The idea of a 90 degree bend in the bottom of the tank would look like crap. I found that out after I got the parts. Big heavy lump, that will stick down to much and easily will get hit by a rock or hitting something while backing up. For now this will have to do. The fuel pump will be moved to the back too.

Felt like it picked up 100hp on top of second gear.

Plumbing part one :-)




Here´s the red pump versus the Holley HP150.
The red one is like a baby, compared to the sturdy piece of engineering the heavy HP150 feels like.




I also found that when adding pressure from the new pump, the primary needle and seat wouldn´t hold the fuel back. Fuel bowl was full of dirt, rust etc. probably could have saved me the fuel pump install, but it sure feels good to have a much better fuel system up and running.

[Rokker]

Mounted the pump in the back where it should be. And AN8 fuel line from tank. Will modify the pickup in the winter and make a baffled room for the pickup inside the tank.



Car still bogs in the corners even in low speeds, not running out of fuel. It´s noticable even in roundabouts now. Seems even worse after the fuel system upgrade, maybe the fuel bowls are filled faster now ?
Any other suggestions are welcomed. Hopefully some that doesn´t cost me as much as the fuel system.

What do you guys say ? Road racing floats ?
I don´t believe rear extension is the cause of my problem, as this happens even while only using the primaries.

[wmhjr]

Wow. That sucks. You might try one thing. Reset your system so the bowls are 25% and no higher and see if anything changes. Just a thought - don't know if it will have an effect or not.

[Rokker]

After my last post i noticed the car would have bad idle qualities and stopped a few times. Left the pump on but engine off. Was dripping from the secondary boosters. I`m running 7psi, took the needle and seat out, cleaned. Did not see any debris on it, but has been fine since.

I would love to mount a camera inside the fuel bowl to actually see what is happening when I`m turning. As the problems where worse with higher secondary fuel level when the needle and seat wouldn`t shut off, I think this is a good indication that what is happening is "fuel is going places where it shouldn`t be right" ? I don`t see how a rear jet extention would cure this, as we are talking about lateral movement not acceleration mainly.

What carb mods should I try ?

Btw, when at the track I ran the bowls real low, and real high. Both the same and one high one low etc. So I kinda feel it`s something a fuel bowl level won`t cure. It behaved exactly the same on the track no matter what.
Btw, let`s not rule out timing, mechanical stuff etc. I`m all ears. Man I need to talk to Patrick.. Thanks, for the help guys !

[Rokker]

Originally Posted by wmhjr

Wow. That sucks. You might try one thing. Reset your system so the bowls are 25% and no higher and see if anything changes. Just a thought - don't know if it will have an effect or not.

As for now, I think this is my best bet, so I`ll try it out one more time. Worst case scenario, it didn`t help right ?

[Vegas69]

Your carb is either set up incorrectly or it's missing a part. Specifically, a bowl vent baffle or extension. A bone stock carb isn't going to give you these problems.