HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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ecotec swap

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Re: ecotec swap

Post  sharkey on Thu Jan 04, 2018 6:39 pm

the trans i put in is a 944 turbo s AOR trans, the strongest 944 trans built. its been further modded with a rear stiffening plate and upgraded cooler. they are supposed to take a decent amount of power.

well, it wasnt the end of the world. pulled the trans back out today, got the end plug out and found no oil whatsoever at the rear mainshaft bearing, just a bunch of dry metal shavings. after getting the rear housing off i found not much oil in the back around 5th gear. after disassembling the bearing i found it had piled the cage up between the balls and the outer race. at least with the lack of oil the metal stayed in one place, there was no shavings in the oil i drained.

all i can really come up with is that when i ran the car in gear it filled the cooler and left the rear dry, although i should have at least had oil residue in the back end. i had wanted to fill the cooler up with oil before i put the trans in but the oil didnt show up in time.

worst part is i was unable to find that bearing, tried the porsche and audi dealers and they both laughed at me. i ended up pulling the back of the old trans apart and stealing the bearing, it looked to be in good shape. could have ordered a new bearing for next week, but i really didnt want to wait a week, nor do i want to pay $300 for a dam bearing. cars all back together and the trans seems to be fine.

sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  alex sol on Fri Jan 05, 2018 8:25 pm

that's pretty good news and doesn't sound catastrophic. i was offered $100 for my entire lightly used 944 turbo trans a couple years ago. so $300 for just a bearing seems a little ridiculous. did you try ebs racing? i've bought lots from them and they seem to beat the price on all the others... pelican, vertex, paragon.. for most things.

so how much oil came out of the system? did you flush and back flush? i hear the cooler works as a sort of a filter if it is similar to the oil cooler in air cooled 911s.

when refilling, is there a valve that allows oil to flow when certain temp or is it always in open oil cooling mode?



alex sol

Posts : 7
Join date : 2017-12-21

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Re: ecotec swap

Post  sharkey on Fri Jan 05, 2018 9:20 pm

the 944 turbo transaxles typically sell from $500-1200 usd, depending if its a limited slip and/or has the oil cooler system. a 944 turbo s transaxle typically sells for $1500 usd, however the price seems to be going up, ive seen a couple listed around $2500 lately.

the oil cooler system on these transaxles is very simple, it has a pump driven off the diff and it has a cooler loop, basicly just some tubing with fins on it and it enters the rear of the transaxles. its not used for pressurized lube, just cooling. ive changed the system to a stacked plate cooler with fans. there is no thermostat, it flows oil all the time. its not really an issue, these transaxles are known for running hot, ive read about the ones with an lsd and no oil cooler reaching 250*f on a warm day with spirited street driving, and getting well over 300*f on a track.

a cooler doesnt act as a filter, rather it gets material trapped in it. i was lucky in a way, the rear bearing got no oil at all, so none of the metal got into the oil, in fact the oil looked like brand new when i drained it.

sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  sharkey on Sat Jan 06, 2018 12:24 am

moved along and did some more work. got the front splitter properly mounted. i only had it attached with sheet metal screws, now its securely bolted, and got some trim clips around the bottom of the bumper.

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one thing the splitter will help solve is my slight cooling issue. one thing i found is it always ran around 200*f just cruising around. the fan would drop it down a little bit, but even when driving on the highway the temps would creep up and till the fan came on and dropped the temp back down. its pretty clear its suffering from a lack of airflow over the rad, and the rad fits fairly far back from the bumper. my old splash shield didnt fit after the swap, so a lot of airflow through the bumper was being lost before it went through the rad, the splitter fixes this issue. the other half of this is the top, there is a large open space spilling air over the rad. i templated out a cover, didnt have any material to make it but at least the design work is done.

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it work out how i really wanted it to, the linkage for the pop up headlights forced me to push it higher up that i wanted. i had wanted to follow the profile of the hood latch bracket but it just wasnt going to work like that.

gonna try and get my washer fluid tank installed finally. i dont have too much more i want to get done before we get the car on the dyno and figure out if we still have an rpm signal problem or if thats fixed. ive got a number of things i want to get done, like rebuilding the rear suspension, i just dont want to spend the money there till i know i have a properly running car.

in the mean time, here are some pics of installing the trans. the old greaseball

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back of the torque tube
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sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  sharkey on Mon Jan 08, 2018 10:08 pm

finally something went right today. i figured today id put the car back in storage, instead i got told if its ready, put it on the dyno. so right off the bat the rpm glitch issue is sorted out. not sure if it was the ecm causing the problem, or weather the crank sensor gap was too tight before, but on the first pull it went right back to 290hp. in the end, well, here is the chart

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414 hp, that was at 18psi, only running around 17 degrees timing, and reving to 8000 rpm. needless to say i havent stopped smiling. im working on editing some video right now.

sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  sharkey on Mon Jan 08, 2018 10:39 pm

here is some quickly hacked together video

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sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  alex sol on Tue Jan 09, 2018 8:15 am

i love that... having a dyno nearby when you least expect it!!

engine sounds great, with the turbo whine and not overly loud exhaust.

at what rpm does the torque spike up. looks like little or no lag.

good job!

the pics posted yesterday don't come up for me...

alex sol

Posts : 7
Join date : 2017-12-21

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Re: ecotec swap

Post  sharkey on Tue Jan 09, 2018 2:00 pm

we couldnt get a stable rpm signal on the dyno, so we wernt able to measure torque. ill have to grab the dyno sheet from the 3rd gear pulls and i can figure out when the turbo was fully spooled. it does have turbo lag, its 57mm turbo, on the large side for the application.

sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  sharkey on Fri Jan 12, 2018 10:36 pm

more one step forward, 2 steps back, kind of. when i plugged my ecm in last week i had a high idle, around 2200 rpm, essentially the idle solenoid wide open. wasnt too concerned at the time, figured it was in the tune. when we tried to turn it down, well it wouldnt. we just restricted it for the time being and kept on tuning. looking into it some more and the end result is the ecm is grounding the idle solenoid all the time, including when the key is off. thinking i had something causing it i went through the wiring and found nothing, and when i unplug the ecm the circuit goes open. so it looks like the ecm has an internal short to ground causing the problem.

seeing how i want to drive my car this year and dont want to be without the ecm for another 5 months i set the idle on the throttle body and pulled the idle solenoid off. so far ive only cold started and run the car for a little bit, im hoping through the temp range the idle wont be off too far. dont really want it struggling to idle cold and idling too high when hot, but ill see what happens.

onto other things i decided im going to give the rear suspension some love. i got looking at it last week and the trailing arm bushings are soft, the spring plates are off to one side of the torsion tube caps, and the back of the car always had a "squirmy" feel when cornering hard. i was hoping to do a complete rebuild of the rear suspension all in one shot, including blasting and powder coating everything, along with deleting the torsion bars and running coilovers, m030 968 swaybars, etc. well, thats not really in the cards right now. for the time being im going to put in the polybronze spring plate bushing kit, spherical trailing arm bushings, and solid lower torsion tube bushings. i had a hard time justifying the cost of the solid upper torsion tube mounts, but i found some info about turning the factory rubber mounts into solid ones with nothing more than a welder and some fire.

id love to find a cheap set of stiffer torsion bars, my car has the 2nd weakest ones used in a 924/944 (23mm). the car being lighter on the front end (by my best guess around 100lbs) and having 200 lb/in lowering springs, the car is a little unbalanced. not gonna worry about it too much, im going to put coilovers and big swaybars in at some point, would just be nice to have for now.

sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

Post  alex sol on Mon Jan 15, 2018 8:23 am

i struggled for a good part of a year with idle issues. on my 911 so totally different beast.

running all stock i went through a set of wires, plugs, rotor, caps then looked into my idle air control valve... turns out it was timing and indexing my distributor. i think you are running coils off the ecm.

then had some lumpy idle and was checking oil in the evening and found the spark was arcing at the top of the distributor cap, replaced and got all my power especially top end over 5500 rpms back. remember i have the twin plug with dual distributor on the 964. then the car would either idle high (3,000 rpm) or stal coming to a stop sign. i found the throttle cable (are you drive by wire?) was frayed and hanging on by 4 tiny threads and replaced the wide open throttle / idle switch. cars idles and drives perfectly now.. even after my complete rebuild!

then ran into similar problem with my e46 m3. i had misfire and cel light up my dash with rough running. checked my coils and spark plugs as the car is new to me. went online and found it was the vanos or variable valve timing coil pack. pulled it out, took to my solder geek friend and six hard ciders later, problem solved! also saved having a disabled m3 while waiting for parts to ship, fix and return. the coil pack on the m3... $729 USD (of course) from ECS tuning. or $150 to a Beisan Systems. Very helpful!

hope you can solve that issue.

regarding suspension i think guys run 400 to 800 lb/in springs on the 944s depending on what you plan to do with the car. track or more street. either way stock setup allows for way too much sway and overly soft ride... i have video of me following my buddy both in 1985.5 bone stock 944s on track in Toronto area. total blast and very slow but... really fun which is all that matters to us old guys.


alex sol

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Re: ecotec swap

Post  sharkey on Mon Jan 15, 2018 10:20 pm

the only issue with the idle is that circuit in the computer to control the idle air solenoid is shorted to ground all the time. makes sense why the car was killing the battery overnight. only fix would be another trip to australia for my computer and thats not going to happen. ill just deal with not having idle control, its not ideal but i just want to drive the thing.

still waiting for my rear suspension goodies to ship, but i started really looking into the torsion bar thing. i was hoping to find some cheap used ones, however it seems anything used thats not the common 23.5mm is almost as much as new swayaway bars. what i did find is that a company called California Import Parts has some options for torsion bars for various vw stuff, and found some people online running them in the 944 with good results. best part is they are less than half the price of the swayaway bars. even better is the company is local to me, so no shipping costs.

after a bunch of research i settled on 27mm bars. many people said with 220lb springs to go with 26mm or 27mm bars, my springs are a little weaker at 200lb, but the front end is a little lighter than stock. this should help balance the car out a bit, and im hoping itll be alright with the bilstein shocks that are on it.

sharkey

Posts : 439
Join date : 2014-11-21
Age : 33
Location : Abbotsford BC

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Re: ecotec swap

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