Jump to content
SAU Community

Recommended Posts

Looking at SR20s running T518Zs there arent too many making 260rwkws on pump?!?! 240-250 seems more the norm.

230-240 is about right for the T518z on pump. Like you say 260 is a pipe dream :P

i just had issacs S15 come from racepace where it made 250, it made 239 on mine.. pretty direct comparo i reckon.

Thats great to know for the sake of the charts you are posting.

You must be kidding if all you want is 260kw from an 18g on E85 lol...... Trent has already said 280 on a 10cm in this thread, and I think he was referring to 98 ron.

Also, my car makes 275 on United 100RON, simply cant take the ignition of that tune if I run 98 so it drops to 260rwks on 98. I personally dont like my chances of the same tuner, using the same dyno going to a smaller turbo from the same manufacturer and making the same power. I stop increasing boost when it stops making power. I get more mid torque with a few more psi but at 19-20psi there isn't much more to be had. I mention that as well to highlight its not going to be likely that I simply run a bit more boost on the smaller turbo to make the same power.

I really don't know how much peak power I am going to lose going to the TD05H-18G....but I feel I may only get back to my 20G power figure with a 50/50 E85. Would love to be the idiot who has got it all wrong and am now going to make the same power with a TD05H-18G as I do with a TD06-20G (Both 8cm housings) :whistling:

Did another t67 on std rb25 sat with an adaptronic, made a lazy 305rwkw on pump @ 17psi

Specs and graph?? :)

Sucks having a turbo sitting there and nothing to bolt it to... Other people's results keep me going :P

Trent I recall you saying T518Z is 240-260 on 8cm and 260-280 for 10cm........ Has this since become a pipe dream? lol

I have only seen the one result with a T518Z 10cm on an SR20 so basing a conclusion on one car is pretty dangerous...but it appeared to offer less power than a 20G but with the same lag. So why not run a 20G and have the same drivability and make more power? I suspect that only finding one result which wasnt encouraging is the reason there are not plenty of cars out there running such a setup?!?!?! It simply doesnt work well?!?!?! >_<

I ended up going 8cm on my TD05-18G as you cant be all things for all occasions. I accept that if you go to a TD05-18G then you are going to gain response and lose power. Going to smaller turbine/compressors for response then putting bigger housings on them to make power doesnt seem to work as good in practice as it may in theory.

Going to smaller turbine/compressors for response then putting bigger housings on them to make power doesnt seem to work as good in practice as it may in theory.

Have to say I agree :(

Am now trying to source a .64 GT28 housing for my 28RS..... The whole element of rapid that I pursue is far from what I have

Trent I recall you saying T518Z is 240-260 on 8cm and 260-280 for 10cm........ Has this since become a pipe dream? lol

we are seeing less and less of the 8cm making over the 250 mark nowadays, whether it is fuel or combo related im not sure (i would rather under qoute and over deliver). Have just done a 10cm which was happy as larry @ 270 with easycams.

I have only seen the one result with a T518Z 10cm on an SR20 so basing a conclusion on one car is pretty dangerous...but it appeared to offer less power than a 20G but with the same lag. So why not run a 20G and have the same drivability and make more power? I suspect that only finding one result which wasnt encouraging is the reason

Yeah T518Z 10cm gives l2 type lag without the top end or mid range torque.

lol i'm still none the wiser about what to get :(.

Sorry mate, being a higher comp motor you will want something with some leeway.

While the L2 10cm will be fine, you may not hit the mark in terms of 300kw. Lately I have found 98ron has been letting me down on DE+T builds (ive done a few).

Be it myself wanting 300kw from a 25+T I would definitely look at a hypergear G3. It will make the said power goal and wont give you headroom issues in terms of restrictive housings or small compressors. Sometimes I find a higher comp motor to be more sensitive to wheel combos, but am pretty confident in the G3.

Plus the G3 is bolt up to stock manifold and off the shelf dump, no bloody external gates or anything of that sort :thumbsup:

Is it wise to throw a turbo on an NA motor that isnt running E85? Surely it makes more sense to just buy a thicker head gasket and set the CR to a more turbo friendly level?

Ive been running a DE+T for 3 years at 220-240 on the standard hypergear highflow with plenty of track, skidpan, drift and daily duties on 98 and its fine, Can be a little prone to detonation on a hot day and doesnt take much in the way of timing with 98 when you start trying to wind in some good boost (I can only run about 15-16psi) that could be due to the shitty OP6 rear housing choking it up though

If you are wanting 250+ I would highly reconmend going e85 or WMI to keep the temps down.. Ill get around to doing these things one day this year

Is it wise to throw a turbo on an NA motor that isnt running E85? Surely it makes more sense to just buy a thicker head gasket and set the CR to a more turbo friendly level?

My first ever DE+T build is into its 7th year of abuse. Cant say Ive ever used E85 on anything other than trying to fudge an emissions test lol.

Have since built 3 more, all going strong also. Meh?

Bet your spewing you didn't Refresh that s15 motor oh well mine now

lol you need to come around and grab it mayne, its here waiting for you. No regrets tho, my issues are in my big rear housing more than anything else. I need that casheeesh! But no rush its here when your ready

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I had 3 counts over the last couple of weeks once where i got stranded at a jdm paint yard booking in some work. 2nd time was moving the car into the drive way for the inspection and the 3rd was during the inspection for the co2 leak test. Fix: 1st, car off for a hour and half disconnected battery 10mins 4th try car started 2nd, 5th try started 3rd, countless time starting disconnected battery dude was under the hood listening to the starting sequence fuel pump ect.   
    • This. As for your options - I suggest remote mounting the Nissan sensor further away on a length of steel tube. That tube to have a loop in it to handle vibration, etc etc. You will need to either put a tee and a bleed fitting near the sensor, or crack the fitting at the sensor to bleed it full of oil when you first set it up, otherwise you won't get the line filled. But this is a small problem. Just needs enough access to get it done.
    • The time is always correct. Only the date is wrong. It currently thinks it is January 19. Tomorrow it will say it is January 20. The date and time are ( should be ! ) retrieved from the GPS navigation system.
    • Buy yourself a set of easy outs. See if they will get a good bite in and unthread it.   Very very lucky the whole sender didn't let go while on the track and cost you a motor!
    • Well GTSBoy, prepare yourself further. I did a track day with 1/2 a day prep on Friday, inpromptu. The good news is that I got home, and didn't drive the car into a wall. Everything seemed mostly okay. The car was even a little faster than it was last time. I also got to get some good datalog data too. I also noticed a tiny bit of knock which was (luckily?) recorded. All I know is the knock sensors got recalibrated.... and are notorious for false knock. So I don't know if they are too sensitive, not sensitive enough... or some other third option. But I reduced timing anyway. It wasn't every pull through the session either. Think along the lines of -1 degree of timing for say, three instances while at the top of 4th in a 20 minute all-hot-lap session. Unfortunately at the end of session 2... I noticed a little oil. I borrowed some jack stands and a jack and took a look under there, but as is often the case, messing around with it kinda half cleaned it up, it was not conclusive where it was coming from. I decided to give it another go and see how it was. The amount of oil was maybe one/two small drops. I did another 20 minute session and car went well, and I was just starting to get into it and not be terrified of driving on track. I pulled over and checked in the pits and saw this: This is where I called it, packed up and went home as I live ~20 min from the track with a VERY VERY CLOSE EYE on Oil Pressure on the way home. The volume wasn't much but you never know. I checked it today when I had my own space/tools/time to find out what was going on, wanted to clean it up, run the car and see if any of the fittings from around the oil filter were causing it. I have like.. 5 fittings there, so I suspected one was (hopefully?) the culprit. It became immediately apparent as soon as I looked around more closely. 795d266d-a034-4b8c-89c9-d83860f5d00a.mp4       This is the R34 GTT oil sender connected via an adapter to an oil cooler block I have installed which runs AN lines to my cooler (and back). There's also an oil temp sensor on top.  Just after that video, I attempted to unthread the sensor to see if it's loose/worn and it disintegrated in my hand. So yes. I am glad I noticed that oil because it would appear that complete and utter catastrophic engine failure was about 1 second of engine runtime away. I did try to drill the fitting out, and only succeeded in drilling the middle hole much larger and now there's a... smooth hole in there with what looks like a damn sleeve still incredibly tight in there. Not really sure how to proceed from here. My options: 1) Find someone who can remove the stuck fitting, and use a steel adapter so it won't fatigue? (Female BSPT for the R34 sender to 1/8NPT male - HARD to find). IF it isn't possible to remove - Buy a new block ($320) and have someone tap a new 1/8NPT in the top of it ($????) and hope the steel adapter works better. 2) Buy a new block and give up on the OEM pressure sender for the dash entirely, and use the supplied 1/8 NPT for the oil temp sender. Having the oil pressure read 0 in the dash with the warning lamp will give me a lot of anxiety driving around. I do have the actual GM sensor/sender working, but it needs OBD2 as a gauge. If I'm datalogging I don't actually have a readout of what the gauge is currently displaying. 3) Other? Find a new location for the OEM sender? Though I don't know of anywhere that will work. I also don't know if a steel adapter is actually functionally smart here. It's clearly leveraged itself through vibration of the motor and snapped in half. This doesn't seem like a setup a smart person would replicate given the weight of the OEM sender. Still pretty happy being lucky for once and seeing this at the absolute last moment before bye bye motor in a big way, even if an adapter is apparently 6 weeks+ delivery and I have no way to free the current stuck/potentially destroyed threads in the current oil block.
×
×
  • Create New...