Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 06-13-2007, 02:49 AM   #1
Kuban
3" Exhaust
 
Join Date: Feb 2007
Location: Milwaukee, WI
Posts: 174
Kuban is on a distinguished road
Default

Well i dont know man, on the previous tune it was set at 12psi and on the dyno the afr was holding low 12's. I could see if i did have a lean situation in only cylender 5, such as a stuck injector, it could have detonated and bent the valves causing them not to seat correctly. Alot of things could have happened, but one things for sure, since it is only in cylender 5 my guess would be there is something wrong with the injector or wires on that injector causing this. Only other possibility is manufacture defect.

Keep in mind the comp test i did was dry. 175 across all the cylenders dry except one is pretty damn good. If it were some outside influence causing this i think more than only one cylender would show exessive wear.
__________________
-868 Miles on new jasper engine
-All hard pipes
-0.57 trim ct-26
-greddy type S
-greddy profec b
-apexi ride high 7 way adjustables
-eibach springs
-slotted rotors
-mkIV TT rims (front)245/45/17 (rear)285/40/17
-targa
-greddy turbo timer
-egr eliminated
-3" turbo back, no cat, no resonator, Apexi N1 back.
-n/a cams

Theres others ill think of later.
Kuban is offline   Reply With Quote
Old 06-13-2007, 04:03 PM   #2
supramacist
1000whp postwhore
 
supramacist's Avatar
 
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
supramacist is on a distinguished road
Default

Not to be rude or anything but you should stop talking about it here and start talking to jasper engines. No malice intended. Don't waiste another day of the warranty.
supramacist is offline   Reply With Quote
Old 06-14-2007, 08:30 PM   #3
IHateHacks
20psi boost
 
IHateHacks's Avatar
 
Join Date: May 2006
Location: New Haven/Hamden
Posts: 793
IHateHacks is on a distinguished road
Default

My 7M with 120K miles and a blown head gasket had 180psi on every cylinder. You say only one was low but thats 1 too many if you catch my drift.

I'm thinking more manufacturer defect than a bad injector.

Let us know what happens.
IHateHacks is offline   Reply With Quote
Old 06-15-2007, 05:03 PM   #4
Kuban
3" Exhaust
 
Join Date: Feb 2007
Location: Milwaukee, WI
Posts: 174
Kuban is on a distinguished road
Default

Well thing is, i called jasper. The warrenty guy that talked to me said its not a defect. Hes saying its my fault. I dont see how but ok. Not many things cause a cylender to lose compression like that just short of rings breaking in two. I dont know what to do now. They wont warrenty it.
__________________
-868 Miles on new jasper engine
-All hard pipes
-0.57 trim ct-26
-greddy type S
-greddy profec b
-apexi ride high 7 way adjustables
-eibach springs
-slotted rotors
-mkIV TT rims (front)245/45/17 (rear)285/40/17
-targa
-greddy turbo timer
-egr eliminated
-3" turbo back, no cat, no resonator, Apexi N1 back.
-n/a cams

Theres others ill think of later.
Kuban is offline   Reply With Quote
Old 06-15-2007, 06:24 PM   #5
Kuban
3" Exhaust
 
Join Date: Feb 2007
Location: Milwaukee, WI
Posts: 174
Kuban is on a distinguished road
Default

Well i think im just going to do a rebuild and do it right myself. I priced myself around 3k for starters.

1100 rods, Brian Crower (1500hp rated)
715 pistons, Ross Pistons
125 head studs, ARP
180 head gasket, COMETIC
265 engine gaskets, Toyota
65 main bearings, Clevite
30 rod bearings, Clevite
73 rod bolts, ARP

total w/o machine work : $2,553

Pricey but could be a promising set up after future fuel and turbo upgrades later.
__________________
-868 Miles on new jasper engine
-All hard pipes
-0.57 trim ct-26
-greddy type S
-greddy profec b
-apexi ride high 7 way adjustables
-eibach springs
-slotted rotors
-mkIV TT rims (front)245/45/17 (rear)285/40/17
-targa
-greddy turbo timer
-egr eliminated
-3" turbo back, no cat, no resonator, Apexi N1 back.
-n/a cams

Theres others ill think of later.
Kuban is offline   Reply With Quote
Old 06-15-2007, 06:26 PM   #6
supramacist
1000whp postwhore
 
supramacist's Avatar
 
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
supramacist is on a distinguished road
Default

It's no worse than re-building a stock engine. But I would stay on them.

Obviously something they did is wrong. I'm sorry to hear that, I for 1 will no longer direct anyone in their direction as for engine alternatives.
supramacist is offline   Reply With Quote
Old 06-15-2007, 07:32 PM   #7
Kuban
3" Exhaust
 
Join Date: Feb 2007
Location: Milwaukee, WI
Posts: 174
Kuban is on a distinguished road
Default

There telling me im getting detonation and its probably blowing the inner head gasket. Thats why i have compression loss. Although i dont have any coolant issues.
__________________
-868 Miles on new jasper engine
-All hard pipes
-0.57 trim ct-26
-greddy type S
-greddy profec b
-apexi ride high 7 way adjustables
-eibach springs
-slotted rotors
-mkIV TT rims (front)245/45/17 (rear)285/40/17
-targa
-greddy turbo timer
-egr eliminated
-3" turbo back, no cat, no resonator, Apexi N1 back.
-n/a cams

Theres others ill think of later.
Kuban is offline   Reply With Quote
Old 06-16-2007, 06:54 PM   #8
Kuban
3" Exhaust
 
Join Date: Feb 2007
Location: Milwaukee, WI
Posts: 174
Kuban is on a distinguished road
Default

well i guess im hoping it could be the headgasket in that cylender. That would explain it, although i havent been having coolant issues and my oil looks normal. Yesterday the temp rose up to the top and dropped right away. I dont know what that means.
__________________
-868 Miles on new jasper engine
-All hard pipes
-0.57 trim ct-26
-greddy type S
-greddy profec b
-apexi ride high 7 way adjustables
-eibach springs
-slotted rotors
-mkIV TT rims (front)245/45/17 (rear)285/40/17
-targa
-greddy turbo timer
-egr eliminated
-3" turbo back, no cat, no resonator, Apexi N1 back.
-n/a cams

Theres others ill think of later.
Kuban is offline   Reply With Quote
Old 06-17-2007, 12:35 AM   #9
supramacist
1000whp postwhore
 
supramacist's Avatar
 
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
supramacist is on a distinguished road
Default

My temp used to do that right before the hg blew the fiznuck out, and I mean lost its' wad. Broke the rear off of 6 on a graphite hg bloched job by previous owner.
supramacist is offline   Reply With Quote
Old 06-17-2007, 12:44 PM   #10
IHateHacks
20psi boost
 
IHateHacks's Avatar
 
Join Date: May 2006
Location: New Haven/Hamden
Posts: 793
IHateHacks is on a distinguished road
Default

See, I'm not the only one who thinks you didn't have enough fuel.

Run a block test to see if your HG is blown.

I would add ARP main studs to that list if I were you.
IHateHacks is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
problem seperating engine from manual tranny Gengus MKIII Supra 7 01-29-2008 12:10 AM
1990 supra turbo engine issues help jespat Non-Generation Specific Questions 4 01-24-2008 02:37 AM
90' engine in 87' w/ tranny issues. chash360 MKIII Supra 2 12-11-2006 05:39 PM


All times are GMT. The time now is 06:10 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87