Any one buy a push turbo yet

[badass1000]

push turbos look to be the sweet setup for cats.
Is push makeing a tunnel dump now or did you just custom fab it that way yourself?
Is the brace/oil tank made of aluminium or steel? Just didn't know if aluminium would hold up or crack. is their some kind of swinging gate or check or any thing to keep the oil from backing up into the turbo if it is upside down for awhile or rolls? Is it even a problem? How does the brace/tank seal to the turbo?
thank you for the pics and info.

btw. it sucks when people make useless posts, but it is not a moderators job to go back and clean up/edit every ones posts.

[HOBB-Z]

Originally Posted by mmsports

Few more pics
Yes Hobbs I have been busy. I thought I cleaned all the BS up. Maybe you need to be the Turbo cat mod .

I don't want to be a mod as I feel we need no mods or at least no more than we used to have. We are all for the most part smart people and able to hit the report button if we feel the need.

This post was hijacked but it was far from an all out brawl and the posts of mine that were deleted had no swearing nor name calling, all I said is it was getting old how every turbo thread turns twisted. Then they vanish just like my rep bars did today with no explanation...


Back on topic push turbos
Why did you make it a tunnel dump ???
I know why I would want it a tunnel dump, but I'd like to know why you guys did.
Looks nice

[HOBB-Z]

Originally Posted by mmsports

I did on this one it got way sides and was close to going to my truck is better than yours. You know what I mean. I love this site and took the job to help not hinder.

btw. it sucks when people make useless posts, but it is not a moderators job to go back and clean up/edit every ones posts.

[/QUOTE]

Finding out who has the best sled and truck in the same day would have been kewl...

Go push turbo's

[Boyko]

Neat kit

Kind of a no no were they tossed in the extra injector though.

tick tick tick

LOL

[Pieguy]

Originally Posted by Boyko

Neat kit

Kind of a no no were they tossed in the extra injector though.

tick tick tick

LOL

Why is that?

[HOBB-Z]

Originally Posted by mmsports

Sorry there was so many i thought a blanket explanation would do on deleting the post I was afraid that it might start something.


Why we do what we do. we have proved that is works.

I would do it to reduce the noise, when you say it works I assume you mean works better.

I also assume it works like push produced it, SO what is better about it??

[wasatchcomm]

the push kit looks awesome, especially the added tunnel dump. ill be calling you soon mm...

looks really good.

[mmsports]

Hear are some pics of my sled with the push kit on.

[M8SP_Kid]

The oil cooler was a great idea. What it does is cools the turbine bearing. When the turbine bearing goes, generally from heat, it breaks a lot of stuff in the turbo. And where does that go? Directly to the engine. In the automotive world, you see a lot of times where both the engine and the turbo go at the same time, because the bearings aren't cooled properly. So any of you who have doubts with the oil cooler, think twice when you don't have it and are stuck on the mountain with a blown up sled due to turbo failure.

[jgw50]

Plenty of people running turbo's without oil coolers and very few people are seeing turbo failures. On guy hooked his oil pump up backwards and still got 500 miles out of it. Keeping the turbo cool is the job of the coolant, and it works well. Boondocker doesn't even hook up the coolant lines on their pump gas kits and they don't have a reputation for losing turbos.

I'm not saying that Push's oil cooler is a bad thing, I'm just saying that it is not completely necessary and it will not absolutely cause a failure of your turbo.

I also think there is some risk to turbo failure placing the heat exchanger in the bottom of the side belly pan. If your going to lose your turbo, puncturing your oil reservoir and running (probably for about 500 miles according to that one guy ) will actually cause your turbo to fail.

[RACINSTATION]

This is a good point JGW. There is not a blanket statement for turbo cooling. From what I have seen, cooling is important on the 2 stroke turbo, but no NEARLY as important as on the 4 stroke. I have made long pulls and stuck my finger in the oil bottle only to find it lukewarm. On a four stroke however, it gets MUCH hotter.

Every kit has its flaws and every one can fail. The PUSH setup is nice and clean and the oil cooler is a nice add on, but not life or death. Ken seems to know his stuff and is a really good guy.

[turboless terry]

Originally Posted by Boyko

Neat kit

Kind of a no no were they tossed in the extra injector though.

tick tick tick

LOL

I would like to hear the skinny on this!

[Boyko]

With the injector in the charge tube you are you are introducing a fuel charge into the intake plenum. If this could ignite with a backfire under boost I do not know. This pressurized charge is lean because the fuel from the stock injectors has not been added yet. If it does light up something is going to come apart.

I do not know if it is possible to ignite or not, I just would not do it.

Well as a general rule injectors should be placed were the air velocity is the highest and the intake rout to the cylinder is the shortest. Just behind the throttle plates is the highest. This helps with atomization and improves throttle response.

[badass1000]

the injector in the charge tube is for better atomization and a slight cooling effect. Different strokes for different folks. Not saying it works or not, but it is one way of doing it. I have never seen one or a turbo motorcycle ever have a back fire into the plenum on turbo only. Some used to and some still do the extra injector in the charge tube. I believe the way they were setting it up was to piggy back it off of the stock injectos (so it had the same pulse/mapping as the stock injectors) and put it on a hobbs switch to kick on at a certain psi. I believe push is mapping the extra injectors in the charge tube independant of the two in the throttle bodies.
I had a supercharged 05 gsxr 1000 runing a 100hp wet shot of nitrous. I choped the throttle once because it was coming up on my at the 1000' mark, but kept the nitrous on. got it down and hit the throttle again and BOOM!!
It was pretty loud and I felt the power drop off. My cousin said they could here it aways away in the pits. ballooned my plenum out like a balloon and riped one of the welds apart.

[jgw50]

I don't really have an opinion on what’s better or not, and the more I think about it, the more I see there are good arguments both ways but I figured I’d just think "out loud" here.


Injectors far from the throttle bodies have are being used in lots of very high end applications including 4 stroke bullet bike engines: http://www.motostack.com/honda/sport...fuel-injection


I don't necessarily think push's design makes for a time bomb, but I did have a natural gas converted Chevy Tahoe. It mixed the natural gas in just before the throttle plate and shut the gasoline injectors off. That made for stoichiometric mixture of gas and air in the intake plenum and I had multiple backfires. Luckily they just blew the cng mixer off and didn’t cause any damage. I just put the intake tube back on and went on my way.

That being said, I don't think this would happen with a push turbo. That extra injector would most likely not be supplying enough fuel to get close to an ignitable mixture, and the possibility of a backfire through the intake is greatly reduced by the way that a two stroke works. A backfire would have to make it through the transfer ports, through the crankcase / crankshaft, through the reed valves, through the throttle bodies, and then into the charge tube.

I've never really thought about it before, but after putting a little thought into it, I don't see how a two stroke reed valve sled could ever backfire through the intake without causing serious damage. I think the backfires we are used to are all in the pipe and all exhaust backfires.

I also think there could be a benefit to giving the fuel more time to atomize, but on the flip side of that argument, a two stroke engine already pulls the fuel in, gets mixed around by the crank, and then goes through various ports into the combustion chamber, then gets ignited. Which gives it way more time / distance than a comparable four stroke.

SO, how's that for rambling? I guess I wanted to give Push some props for making a nice kit and putting some new cool things in it.

I also did a little thinking on the oil kit and realized that a cooler might be necessary as the exhaust tubing all runs close to the "oil tank" in this kit and probably gives a lot of opportunity for oil heating from the hot exhaust. Adding an oil cooler is one good way around that.

[mmsports]

Know that the secondary injectors only come on during boost I think that it should work and will give no issues. we will see that is the main reason I have one on my sled is to test and compare.

[TurboM700]

There is a couple of issues with the injectors before the throttle plates.

1. When your on and off the throttle alot you can get pooling effect before the throttle plates. When you get back into the thottle all that fuel gets sucked in and gives you a bog.

2. If your charge box is not perfectly equally in air displacment you can get one side rich or leaner then the other.

The 2nd one is more of a issue then the 1st. If you remember way back when the very first M7 kit came out from boondockers and they had the side intake for the charge box and this was a huge deal. This is why Twisted turbos has the injectors after the throttle bodys and can still use a side intake for the charge box.

The cooling effect of the fuel being in the intake is very miniumal. You make get more of a full atomazation of the fuel because it has a longer time to mix with the air. I'll give you this.

I would personal like them after the throttle bodys but each kit has the plus and minuis.

All in all this is a very nice if not one of the nice turbo set ups I have seen. Some body as spent some time and money at the machine shop/welding. Or owns his own fab shop.

Nice job.

Mike

Sorry about the spelling doing this all on a Iphone.