follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum - FT86CLUB > Technical Topics > Engine, Exhaust, Transmission

Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-10-2021, 03:09 AM   #1
jrhudson
Member
 
Join Date: Apr 2021
Drives: 2016 scion frs
Location: ca
Posts: 40
Thanks: 21
Thanked 10 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Rebuild motor or built short block?

So i'm panicking since i didnt think i would break the motor from a dumb forgetful mistake. I forgot a ratchet on the crank pulley bolt and now my engine on start up immediately has metal to metal contact. Like heavy, violent shaking near the center of the engine(probably crankshaft)

Anyways, plan is to put some pistons, rods on the old block if its saveable. but since find a shop to assemble a built fa20 motor is proving to be quite difficult. Next best thing is to get a built short block from IAG or some other performance shop and put the heads on myself. I am quite the novice case in point being i broke my engine with an install. so yea.

how difficult is it? oh yea this isn't for an NA car. Turbo-ed. Trying to reach 400hp or around there. anyone with built motors that were total noobs when they did it?
jrhudson is offline   Reply With Quote
Old 04-10-2021, 03:16 AM   #2
thpark93
Member
 
Join Date: Feb 2017
Drives: 2016 Asphalt FR-S
Location: Windsor, ON
Posts: 29
Thanks: 5
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
This would be a good post for if ever my motor also breaks, sub'ed! Good luck with your project.

Sent from my Pixel 5 using Tapatalk
thpark93 is offline   Reply With Quote
Old 04-10-2021, 07:20 AM   #3
DarkPira7e
No, my car doesn't run
 
DarkPira7e's Avatar
 
Join Date: Feb 2017
Drives: 2013 Turbo Firestorm FRS
Location: Vermont
Posts: 3,065
Thanks: 2,225
Thanked 2,832 Times in 1,480 Posts
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
What is your budget? Built block is nice but a long block replacement is about the same cost and you have extra parts to hoard/sell.

I recommend the used longblock
__________________
Turbo FR-S Build - Build Thread
JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block
DarkPira7e is online now   Reply With Quote
Old 04-10-2021, 08:43 AM   #4
Lantanafrs2
Senior Member
 
Join Date: Jan 2018
Drives: 2013 frs red
Location: South Florida
Posts: 2,168
Thanks: 1,235
Thanked 1,714 Times in 944 Posts
Mentioned: 2 Post(s)
Tagged: 1 Thread(s)
From what I read, a built short block is the last stop before the ls goes in. Or a k motor or whatever. I'm very skeptical of "built" anything.
Lantanafrs2 is offline   Reply With Quote
Old 04-10-2021, 10:05 AM   #5
TommyW
Senior Member
 
TommyW's Avatar
 
Join Date: Feb 2017
Drives: '13 Whiteout
Location: San Clemente
Posts: 940
Thanks: 236
Thanked 742 Times in 404 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Just get the IAG you get a warranty with it also. I got it but stayed NA.
TommyW is offline   Reply With Quote
Old 04-10-2021, 11:44 AM   #6
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 4,838
Thanks: 7,404
Thanked 6,431 Times in 2,977 Posts
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by jrhudson View Post
put the heads on myself.I am quite the novice case in point being i broke my engine with an install.
You do know that putting heads on is not just a simple case of slapping the heads on the block right? It is a pretty involved process.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is online now   Reply With Quote
The Following User Says Thank You to NoHaveMSG For This Useful Post:
DarkPira7e (04-10-2021)
Old 04-10-2021, 02:39 PM   #7
jrhudson
Member
 
Join Date: Apr 2021
Drives: 2016 scion frs
Location: ca
Posts: 40
Thanks: 21
Thanked 10 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by DarkPira7e View Post
What is your budget? Built block is nice but a long block replacement is about the same cost and you have extra parts to hoard/sell.

I recommend the used longblock
my budget is probably like...3k maybe 5k at the most. I've seen alot of used motors around 3-5k.
jrhudson is offline   Reply With Quote
Old 04-10-2021, 02:41 PM   #8
jrhudson
Member
 
Join Date: Apr 2021
Drives: 2016 scion frs
Location: ca
Posts: 40
Thanks: 21
Thanked 10 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by NoHaveMSG View Post
You do know that putting heads on is not just a simple case of slapping the heads on the block right? It is a pretty involved process.
yes sir. From what i've been reading and looking at videos alot more parts since the springs and valves. also the timing components. Putting the cylinder heads would together and putting it on the short block would be easier to me since i wouldnt feel comfortable measuring the clearances on the short block.
jrhudson is offline   Reply With Quote
Old 04-10-2021, 03:05 PM   #9
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 4,838
Thanks: 7,404
Thanked 6,431 Times in 2,977 Posts
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by jrhudson View Post
yes sir. From what i've been reading and looking at videos alot more parts since the springs and valves. also the timing components. Putting the cylinder heads would together and putting it on the short block would be easier to me since i wouldnt feel comfortable measuring the clearances on the short block.


Just making sure. You shouldn't need to tear the heads down so far as to mess with the springs and valves if your heads are in good shape. Make sure you prep, prep, prep. I recommend printing out the sealant application "maps" from the manual ahead of time. Follow them very carefully.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is online now   Reply With Quote
Old 04-10-2021, 03:26 PM   #10
jrhudson
Member
 
Join Date: Apr 2021
Drives: 2016 scion frs
Location: ca
Posts: 40
Thanks: 21
Thanked 10 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by NoHaveMSG View Post


Just making sure. You shouldn't need to tear the heads down so far as to mess with the springs and valves if your heads are in good shape. Make sure you prep, prep, prep. I recommend printing out the sealant application "maps" from the manual ahead of time. Follow them very carefully.
Appreciate it. =D Ive been looking over the service/shop manual on the assembly of short block and heads. Ill be tearing down the heads to check the valves. It sounds like the valves and pistons are hitting each other. Would it be possible the car is somehow out of timing? I suspect that might be the case since the crank pulley and bolt were fully off with the accessory belt just there.
jrhudson is offline   Reply With Quote
Old 04-10-2021, 04:01 PM   #11
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 4,838
Thanks: 7,404
Thanked 6,431 Times in 2,977 Posts
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by jrhudson View Post
Appreciate it. =D Ive been looking over the service/shop manual on the assembly of short block and heads. Ill be tearing down the heads to check the valves. It sounds like the valves and pistons are hitting each other. Would it be possible the car is somehow out of timing? I suspect that might be the case since the crank pulley and bolt were fully off with the accessory belt just there.
Shouldn't be out of time. The timing gear is keyed to the crank inside of the timing cover. Working out from the assembled block on the crank snout you have the timing gear(keyed to crank), timing cover(oil pump is housed in the timing cover), crank pulley spacer(indexes on the same key as timing gear and the flats drive the oil pump), and crank pulley. The crank pulley spacer has a pin that indexes to the crank pulley. You would have to pull the key to get it out of time. What where you doing when you had left a wrench on the crank pulley?
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is online now   Reply With Quote
Old 04-10-2021, 04:35 PM   #12
jrhudson
Member
 
Join Date: Apr 2021
Drives: 2016 scion frs
Location: ca
Posts: 40
Thanks: 21
Thanked 10 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by NoHaveMSG View Post
Shouldn't be out of time. The timing gear is keyed to the crank inside of the timing cover. Working out from the assembled block on the crank snout you have the timing gear(keyed to crank), timing cover(oil pump is housed in the timing cover), crank pulley spacer(indexes on the same key as timing gear and the flats drive the oil pump), and crank pulley. The crank pulley spacer has a pin that indexes to the crank pulley. You would have to pull the key to get it out of time. What where you doing when you had left a wrench on the crank pulley?
I did a clutch install about 2 weeks ago. I had someone hold the crank in place when tighten up the flywheel and clutch/pressure plate. forgot about ratchet and drove with it on the bolt still.

How hard is it to pull off the crank spacer. It doesnt seems to move easily.
jrhudson is offline   Reply With Quote
Old 04-10-2021, 04:40 PM   #13
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 4,838
Thanks: 7,404
Thanked 6,431 Times in 2,977 Posts
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by jrhudson View Post
I did a clutch install about 2 weeks ago. I had someone hold the crank in place when tighten up the flywheel and clutch/pressure plate. forgot about ratchet and drove with it on the bolt still.

How hard is it to pull off the crank spacer. It doesnt seems to move easily.
It should just slide straight out if the crank pulley is off. It is common to have this accidentally come out during aftermarket crank pulley install.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is online now   Reply With Quote
Old 04-10-2021, 06:03 PM   #14
jrhudson
Member
 
Join Date: Apr 2021
Drives: 2016 scion frs
Location: ca
Posts: 40
Thanks: 21
Thanked 10 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by NoHaveMSG View Post
It should just slide straight out if the crank pulley is off. It is common to have this accidentally come out during aftermarket crank pulley install.
Just cause im not sure. The spacer is the metal thing that the bolt goes into right? And theres a little positioning dowel/pin on it right? If it that is the crank spacer yea its not budging or moving by hand.
jrhudson is offline   Reply With Quote
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rebuild with OEM short block finch1750 Engine, Exhaust, Transmission 7 11-25-2020 05:25 PM
FS: FA20 Fully Built Short Block MicheleAbbate Engine, Exhaust, Bolt-Ons 24 08-28-2019 09:57 PM
Crawford Built Short Block texasbound972 Engine, Exhaust, Transmission 26 05-15-2015 03:39 PM
Built B18B Short Block C130NAV Miscellaneous 0 01-04-2014 12:15 PM
FRS300 Rebuild Has Begun..Blown Motor to Built Monster FA20Club.com Forced Induction 917 10-20-2013 06:26 AM


All times are GMT -4. The time now is 05:58 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.