11-14-2011, 01:59 PM | #21 | |
12psi boost
|
Quote:
__________________
1986 Mk III MA70 7MGE Targa Top 5 Speed Stock Exhaust |
|
11-14-2011, 03:08 PM | #22 |
3" Exhaust
Join Date: Apr 2010
Location: sarasota fl
Posts: 194
|
the block is fine. if it were the block it would have been all the rods or atleast a different rod than before. i'm gonna try and be able to rebuild again but if not the the cost of a jdm 7m is getting WAYYYY up there whereas a 2jz rb25 or 1uz is still reasonable. hell a jdm rb25 with trans ecm turbos wiring everything is only $1300 and can make almost 400 on stock turbos. so its just not smart to stay 7m if i need a new block assembly or if the cost goes over $500 because there is a 2jzvvt and several 1uz at the local junk yard for 335 with trans and ecm/wiring
__________________
92 miata 7mgte swap forged pistons,studded mhg, 3 inch dp with a glass pack,blowthrough MAF-T,550cc inj, act stage 2 clutch, fmic kit, greddy rs, full wire tuck, rx7 lsd rear with 4.10s. 15psi "ct26-A"??(waiting on dyno #s) if anyone knows whats up with my turbo let me know it has a larger comp wheel nicer machining and 6 dual fins rather than 5? its confusing and keep finding too much contradicting info. would LLLLLOOOOOOOOVVVVVVVEEEEE a compressor map |
11-15-2011, 04:36 AM | #23 |
walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
|
have you had the crank mains checked for straightness or align bored? just because all of the rods arent going bad doesnt mean the block isnt out of alignment.
if its spinning bearings, id look at the oil passage ways in the crank and block as well. could be a blockage closer too the front galley and restrict oil to bearing #1. just a couple thoughts. wish i lived around where you are. there isnt a 1uz, rb25 or 2jz of any kind around here for less than 2500.
__________________
87 toyota 4x4 single cab short box pickup, 7MGZE. |
11-15-2011, 08:37 PM | #24 | |
12psi boost
|
Quote:
__________________
1986 Mk III MA70 7MGE Targa Top 5 Speed Stock Exhaust |
|
11-16-2011, 03:43 PM | #25 |
3" Exhaust
Join Date: Apr 2010
Location: sarasota fl
Posts: 194
|
the block is perfectly straight i checked it before it went together and just today when the crank was removed . it was rod #2 again im pretty sure that rod was out of round or something. its gonna run me 185 to have the crank and rods all redone. the block is gonna be flushed using brake clean at 120psi if theres anything in the block itll come out of it. YES my driving is very hard the car had 1200 miles on these bearings and maybe 300 of them are normal driving the rest is spirited driving around town, highway pulls, the strip,and drifting but even if the engine were driven at redline the entire 1200 miles the bearings should be able to handle it. the pump IS a 7mge pump and my cooler relief spring has a crack in it. i've found several things contributing to this problem. last time i just thought i was unlucky and got a bad bearing so i dropped the pan and put some bearings in it. this time i dropped the engine and put it on the stand so i'm finding the things to can't see until they come apart /: Oh well if it throws another rod then this block will go to the scrap bin I have the 185 plus parts now but i dont have the 335 plus for another swap at the moment.
__________________
92 miata 7mgte swap forged pistons,studded mhg, 3 inch dp with a glass pack,blowthrough MAF-T,550cc inj, act stage 2 clutch, fmic kit, greddy rs, full wire tuck, rx7 lsd rear with 4.10s. 15psi "ct26-A"??(waiting on dyno #s) if anyone knows whats up with my turbo let me know it has a larger comp wheel nicer machining and 6 dual fins rather than 5? its confusing and keep finding too much contradicting info. would LLLLLOOOOOOOOVVVVVVVEEEEE a compressor map |
11-16-2011, 07:05 PM | #26 |
3" Exhaust
Join Date: Apr 2011
Location: columbus
Posts: 151
|
all i know is....drifting and 7m's dont mix from wat ive heard. everything else is golden.
|
11-16-2011, 08:08 PM | #27 | |
12psi boost
|
Quote:
__________________
1986 Mk III MA70 7MGE Targa Top 5 Speed Stock Exhaust |
|
11-16-2011, 09:29 PM | #28 |
3" Exhaust
Join Date: Apr 2010
Location: sarasota fl
Posts: 194
|
its not a supra i drive a miata with a 7m in it . i built it to handle the abuse ie coilovers swaybars, beefed diff, better clutch, tires and rims all that good stuff. but most of the time it is street driving. I get what your saying though you need a dd and a toy. but everything on my car has held up perfect besides the engine. this time it should be good though new oilpump crank and rods machined for the bearings rebuild the head and new cooler setup. we'll see
__________________
92 miata 7mgte swap forged pistons,studded mhg, 3 inch dp with a glass pack,blowthrough MAF-T,550cc inj, act stage 2 clutch, fmic kit, greddy rs, full wire tuck, rx7 lsd rear with 4.10s. 15psi "ct26-A"??(waiting on dyno #s) if anyone knows whats up with my turbo let me know it has a larger comp wheel nicer machining and 6 dual fins rather than 5? its confusing and keep finding too much contradicting info. would LLLLLOOOOOOOOVVVVVVVEEEEE a compressor map |
11-16-2011, 10:48 PM | #29 | |
Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
|
Quote:
I'm sorry, but I've covered ALL OF THIS. You'd do well to pull your fingers out of your ears... Thousands of complete novices have rebuilt these engines without as much trouble using certain proven methods.... expert builder or not you still might be wise to try to learn from them. Honestly, you may feel you've been taught by God, but please do understand why I might not be remotely impressed. The drifting issues come down to oil pan design. It's easily remedied by some added baffling, a scraper and running slightly more oil than spec. The "A" group of engines (both Turbo A and Group A) all ran a far superior pan which addressed these shortcomings.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> |
|
11-17-2011, 06:13 AM | #30 | |
3" Exhaust
Join Date: Apr 2010
Location: sarasota fl
Posts: 194
|
Quote:
i never said i don't make mistakes , actually quite the contrary I have admitted that i overlooked certain things. You have actually been very helpful with the info youve given me so idk exactly where your coming from with "pull my fingers out of my ears". I didnt ask any questions just answered others questions. I know whatever i overlooked was 100% my fault as I did ALL of the work myself ie oil pump, relief spring, and the #2 rod IS out of round. I honestly posted this asking a few simple questions and its turned into a big ordeal where I'm now being slightly insulted. I havent been rude even when answering questions that were answered in my first post and every time i've gotten a good response I've gone out and checked the engine right after. All i said is the mains are straight. the bearings PERFECT the rod bearings were also PERFECT with the exception of the #2 rod (I think it was out of round when it was originally installed) I probably was just in a hurry and measured a different rod twice. When the engine was being built/installed I was in a hurry because I only had this car for my dd and no other transportation, the stock engine had just blown up and I was still working a ways from my house. I realize pretty much ANYONE can rebuild an engine its not that much of a skill if you have the correct tools and specs. Thanks for the help/info but if i'm going to be ridiculed or told that i'm trying to impress someone i'll just go elsewhere with any questions. -__-
__________________
92 miata 7mgte swap forged pistons,studded mhg, 3 inch dp with a glass pack,blowthrough MAF-T,550cc inj, act stage 2 clutch, fmic kit, greddy rs, full wire tuck, rx7 lsd rear with 4.10s. 15psi "ct26-A"??(waiting on dyno #s) if anyone knows whats up with my turbo let me know it has a larger comp wheel nicer machining and 6 dual fins rather than 5? its confusing and keep finding too much contradicting info. would LLLLLOOOOOOOOVVVVVVVEEEEE a compressor map |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Tired Engine | WhosYourSupra | Non-Generation Specific Questions | 2 | 03-06-2007 06:34 PM |