Wannagofast Clayton Ga 2017
05-25-2017, 07:32 PM
#17
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
Not good lol. Ran 146.12 quarter mile but car died after that. We found liner shavings in the oil and looks like we melted 5th cylinder liner.
Already ordered 3.8L full kit with cosmetic head gaskets, Upgraded studs, cams, porting heads and new bearings again. All good though lol should be done in 3 weeks. Bill radar transmission worked perfectly and sean freed did a amazing job also no metal shavings so far in trans.
Already ordered 3.8L full kit with cosmetic head gaskets, Upgraded studs, cams, porting heads and new bearings again. All good though lol should be done in 3 weeks. Bill radar transmission worked perfectly and sean freed did a amazing job also no metal shavings so far in trans.
Last edited by 996tt6156R; 05-26-2017 at 12:15 AM.
05-27-2017, 12:57 AM
#18
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
We found the liner damage it sucks but it's all being upgraded anyways. Nikasil looks like it will not last long above 800whp. It gets to hot in there it seems. So the new evoms 3.8L package will take care of that problem.
05-27-2017, 08:05 AM
#19
Originally Posted by 996tt6156R
We found the liner damage it sucks but it's all being upgraded anyways. Nikasil looks like it will not last long above 800whp. It gets to hot in there it seems. So the new evoms 3.8L package will take care of that problem.
Tims world record 1 mile porsche runs oem pistons with ceramic coating 1300 hp and he built over a dozen engines at 900+ hp on oem pistons. Your issue is likely more of a lean issue than a liner coating issue
05-27-2017, 12:38 PM
#20
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
We ran higher timing on the stock liners and pistons which john from evo spec said that's a no no. Never had any lean outs that i know of it was to hot in there and the liner just gave out. Injectors will be cleaned and checked.
Last edited by 996tt6156R; 05-28-2017 at 07:22 PM.
05-27-2017, 12:43 PM
#21
Originally Posted by 996tt6156R
We ran higher timing on the stock liners and pistons which john from evo spec said that's a no no. Never had any lean outs that i know of it was to hot in there and the liner just gave out. Injectors will be cleaned and checked.
Attached is the new stuff that's coming.
Attached is the new stuff that's coming.
Btw your cams are matched to the cam housings from the factory. Evoms sends your cams to germany for regrind . Takes 2-3 months to get them back
05-27-2017, 12:49 PM
#22
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
No this is not true. Detonation happens not only with fuel but heat and timing cause detonation. Logs show no lean out and I have a fuel psi gauge which never went low. Once a cylinder runs to hot from heat and iats with nikasil liners u get detonation. I ran higher timing then you should of. Normal timing should run around 26 advanced in stock liners. I was way above 28 advanced sometimes 30.
Everything thinks lean out and bam that's the cause but it's not. Now if I had a stand alone it would have caught it right away syvec or motec. I also had some timing pull which now we figured out why on higher boost.
Everything thinks lean out and bam that's the cause but it's not. Now if I had a stand alone it would have caught it right away syvec or motec. I also had some timing pull which now we figured out why on higher boost.
05-28-2017, 11:46 PM
#25
Look at your lamda. The last bank is chasing the first bank and if you are running e85 the lamdas are jacked up running from .90 to 1.00 which is lean for pump gas and way lean for e85 since the stoich for e85 is different than gas. While you have way to much timing its the lean issue that melted the cylinder.
Im sure this falls on deaf ears but ill tell you now if you dont address this you next build will go the same way as the first
Im sure this falls on deaf ears but ill tell you now if you dont address this you next build will go the same way as the first
05-28-2017, 11:49 PM
#26
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
No... the 1.00 u see is short terms that's oxygen sensing bank if it goes above 1.00 it means your adding fuel if it's below 1.00 your taking fuel out. The lambda are at dead .80 afr which is high 11s WOT.
If I was lean in anyway I would have blown it up 7k miles ago. Evoms checked out the data and said no issues on fueling but I had a little to much timing which is a no no on aluminum liners plus they don't like the 10mm studs.
The cause was to much cylinder pressure and timing. Which I was already going to go bigger.
I'll send pics of the spark plugs. Last time I checked it was greyish.
If I was lean in anyway I would have blown it up 7k miles ago. Evoms checked out the data and said no issues on fueling but I had a little to much timing which is a no no on aluminum liners plus they don't like the 10mm studs.
The cause was to much cylinder pressure and timing. Which I was already going to go bigger.
I'll send pics of the spark plugs. Last time I checked it was greyish.
Last edited by 996tt6156R; 05-30-2017 at 11:13 AM.
05-28-2017, 11:57 PM
#27
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
My new build will be.
12mm studs
3.8L
CP Pistons
New bearings
The same rods puter
Valves and springs so I can go to 8k rpm
Port and polish heads
GT3 oil pump
Possible stand alone ecu so this doesn't happen again
3 weeks should be done for next event.
12mm studs
3.8L
CP Pistons
New bearings
The same rods puter
Valves and springs so I can go to 8k rpm
Port and polish heads
GT3 oil pump
Possible stand alone ecu so this doesn't happen again
3 weeks should be done for next event.
05-29-2017, 11:42 AM
#29
Instructor
Thread Starter
Join Date: Jan 2013
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
Your not understanding my car has already been tuned on e85 on a dyno at topspeed with there wideband e85 gauge that hooked up to my oxygen sensor wire which we have a connection for to make sure my car was running correct. The higher the boost the more fuel it puts out by the adjustable fpr.
There was no lean out when I took the plugs out 300miles ago to change them they were light grey. Protomotive knows what he is doing. I don't have a spot yet to keep the gauge in the car yet.
Your not helping your not a tuner. Protomotive been doing this for 30years it's the aluminum liner that failed.
You can still use lambda to base your fuel off of. The numbers change but still you have an idea where your at here's a link they still use 14.7 stoich. https://rennlist.com/forums/997-turb...-5bar-fpr.html
Attached pic you see they still match up the same it's just reads different numbers.
There was no lean out when I took the plugs out 300miles ago to change them they were light grey. Protomotive knows what he is doing. I don't have a spot yet to keep the gauge in the car yet.
Your not helping your not a tuner. Protomotive been doing this for 30years it's the aluminum liner that failed.
You can still use lambda to base your fuel off of. The numbers change but still you have an idea where your at here's a link they still use 14.7 stoich. https://rennlist.com/forums/997-turb...-5bar-fpr.html
Attached pic you see they still match up the same it's just reads different numbers.
Last edited by 996tt6156R; 05-30-2017 at 11:14 AM.