6.7, Holset HE351VGT turbo

[WDixon27]

got it in the mail today and damn it is heavy, it'll be a little while before i can play as we are moving into a new shop but i think my seesaw linkage can work, i hooked up to the speed sensor with my scope and it gives one AC pulse per rotation of the shaft so i may look into doing something with that before going after the expensive turbo tach that garrett makes

[moparguy]

So WD, had a chance to play with the new toy yet?

[WDixon27]

not yet as i have been very busy with moving our shop to a new location, i wish i had the turbo for all of the trips with a heavy gooseneck as i was borderline rolling coal for the 3 miles and 2 traffic lights to the new diggs, the lights and traffic killed any chance to not suck fuel at a hellacious rate, i got 11.7 for that tank but even with the ddp stage II sticks and the plate full forward i didn't get into egt trouble till i hit about the middle of direct drive with it to the mat the whole time it would get to 1250* don't think i could handle mountains with this much fuel and a load. i hope to get to play with it soon as i just got the shop up and running today with all of the lifts and the air is up and functioning, everything else is non critical unpacking of a junkyard/shop load of inventory/supply's. i scored a cheapo ebay dual port wastegate but the front side is not sealed so using it to suck the rack into exhaust brake ain't gonna happen, my back up plan if i can't find a vacuum servo that'll do the job i want ill add a air compressor (wanted one anyway) and do it with pressure

Originally Posted by moparguy

So WD, had a chance to play with the new toy yet?

[WDixon27]

i have done some playing around and as of last night i think i am going to abort, attaching this thing to a 12v manifold is going to take a special adapter, both flanges are set up to have studs and have blind holes in the same location so a bolt from the back side is not a option, i cut out a pair of flanges to make a 1" spacer to bolt between the two but the bolt circle is not far enough away from the hole to clear the studs when you wall it up, i think it can be done but not sure it is worth the effort

i have not totally decided the fate of the he351, not sure if i am going to sell it (in a flooded market) or build a manifold for it and bolt it onto my old 6 series bmw if someone wants it i may sell it for what i have in it plus shipping

[moparguy]

It does sound like it's not an easy thing to make work. Guess that's why you don't see much on the conversion. I had (still have) high hopes that this could be a great upgrade for 300 to 400hp trucks.

RR

[KLauber]

hey if ur willin to sell it, u might have a taker here. i had the idea not 2 months ago, and then i just read ur thread. the he351 seems to be the perfect solution to us guys that arent pushin any real power levels, yet. did you say you did get a double action waste gate?
will

[TBurow]

i am currently using a he351cw mon vgt version on my 96, it mounts right to the the manifold and uses a hx40 downpipe. the turbo has to be reclocked and it works great, but surges at 20+psi when i let off the throttle fast. peak boost between 42 and 45psi and keeps egt's cooler than the hx35. i know its not the vgt but it works good.

i have heard of people using the he351cw or hx35 wastegate actuator modified to actuate the vanes using a set of stop screws to limit travel and control surge.

[WDixon27]

it is more then likely going on my 635 bmw. i could never find a double acting wastegate, the final control system i figured up was a wastegate to open and a linear actuator to run the e-brake direction, with a possibility of running the whole thing off the actuator, i found a place with a $70 controller that has 3 positions at the push of a button, one for the brake and run the other two off pressure switches to advance the rack in steps

Originally Posted by KLauber

hey if ur willin to sell it, u might have a taker here. i had the idea not 2 months ago, and then i just read ur thread. the he351 seems to be the perfect solution to us guys that arent pushin any real power levels, yet. did you say you did get a double action waste gate?
will

[JHynes]

I have the turbo but the moving the vanes has me im set on using a wastegate accuator just not sure how to get the brake to work with it. Help Please.

[kccoon]

I am very interested in what you guys are talking about here a friend has just recently bought a VGT off a 08 and we are working on getting it set up to put on his 2000 5sp. we are planning on trying to control the vanes with a waste gate actuator that is set to open clear up at like 8lbs of boost and then we are going to try to use an electronic ram to slotted to the VGT actuator to control the E brake control. would like any thoughts regarding this idea?

[WDixon27]

this is what i came up with before i aborted the project


i was going to use a low pressure wastegate of around 5# opening pressure and trim the opening point with a bleed valve, the other side labeled actuator i was going to use some sort of linear actuator (on the other side of a seesaw linkage), either pressure, vacuum or electric, the opposing not in action servo would act as the pivot for the acting servo to move the rack arm, tweak it to a nice starting position at rest and then tune the servos to move it to the desired end point

its not a perfect solution but it is the concept i came up with, i never got as far as prototype so it likely has bugs, the last actuator i came up with was electric and run by a stand alone controller that you can set the end points and have 3 different preset positions, it was about $150 and i had started thinking about running the whole thing via a single more advanced actuator/controller with more preset position capability and have the thing advance the rack as pressure sensors would be tripped by rising boost