Slow Turbo Spool / Coolant turbo feed and drain line locations?

864 Views 10 Replies 5 Participants Last post by robgoof, Sep 3, 2020

Jeremy S

Discussion Starter · Sep 3, 2020

So initially I went ahead and hooked up a t3/t4 turbo to my D14 and everything went great,no oil leaks, no weird noises etc, but after doing some test pulls I think my little 1.4L engine is struggling to spool up this relatively big .57 trim compressor and only peaks to 3PSI. I have double checked for boost leaks all the way round the charge pipe and made sure that the wastegate spring was an 8PSI one(which it was). What can I try to test if the wastegate is good?

This issue has let me consider getting a .42 trim compressor turbo with a t28 flange(hopefully same amount of air in a tighter space creates more boost) but all of these small turbos are watercooled and have no idea from where I can get water feed and drain.

Appreciate any help that is given

Save

1 - 11 of 11 Posts

robgoof

· #2 · Sep 3, 2020

wg fire ring valve seat in place facing the right way?

a faulty wg will usually over boost.

Save

Reactions: 1

mattliston

· #3 · Sep 3, 2020

Do compression check, verify your valve lash is CORRECTLY done, aka, not too tight and holding valves open.
Go slightly loose on exhaust valve lash, go middle for intake.
Then make sure there are zero exhaust leaks.
I personally would be looking for a spare head to do some valve love and porting on. nothing like a fresh valve lapping and some intake and exhaust porting to help things move along!

Save

Reactions: 2

drtalon123

· #4 · Sep 3, 2020

Did you get the car tuned? If not, and you just loaded a random starter map from the Hondata DB, you might not have provisions for boost?

A good tune will make a relatively large turbo perform pretty good, even on a smaller engine.

Save

Jeremy S

Discussion Starter · #5 · Sep 3, 2020

mattliston said:
Do compression check, verify your valve lash is CORRECTLY done, aka, not too tight and holding valves open.
Go slightly loose on exhaust valve lash, go middle for intake.
Then make sure there are zero exhaust leaks.
I personally would be looking for a spare head to do some valve love and porting on. nothing like a fresh valve lapping and some intake and exhaust porting to help things move along!

Don't have anything to test compression but it shouldn't be the issue.
Also didnt find any exhaust leaks so thats a good thing.The ONLY "exhaust leak" there seems to be is coming from the wastegate downpipe (and it sounds awful aswell because of it) When I put my hand under the pipe I can feel a considerable amount of exhaust coming out,and Im pretty sure that the wastegate is fully closed .
Didnt know that valve lash actually make that much of a difference.Ill check that out though, thanks

Save

Jeremy S

Discussion Starter · #6 · Sep 3, 2020

drtalon123 said:
Did you get the car tuned? If not, and you just loaded a random starter map from the Hondata DB, you might not have provisions for boost?

A good tune will make a relatively large turbo perform pretty good, even on a smaller engine.

Car is not tuned, but this is why Im trying to get it working properly before going to the tuner.
I agree that the tune is a big role in the power gains made with the addition of the turbo, but it should be this hard (7000RPM for 3PSI) lol
I have an idea but dont know if it is completely safe....what if I block off the wastegate port and plug up the vacuum port on the turbo( or does the vacuum port need to stay open?) so I can see if it can peak more than 3PSI?
Thanks so much for the response btw

Save

slo_eg8

· #7 · Sep 3, 2020

stop beating on it and take it to the tuner. he knows more than you think he does and will probably be able to diagnose it quickly.

How-To Hook Up Turbo Coolant Lines

Save

Reactions: 1

mattliston

· #8 · Sep 3, 2020

Dont do anything to increase boost. Just do good inspections to verify eveyrthing is nice and tight, fix any and all leaks.

Absolutely ZERO sense in trying to increase boost on an untuned setup.

basemaps are GARBAGE, they are purely for getting the car to the tuner. Maybe if you were a GM LS swapped setup, a basemap would be perfectly safe, as there are billions of swaps to take data from and fine tune it.

Save

Reactions: 1

Jeremy S

Discussion Starter · #9 · Sep 3, 2020

30 mins earlier I wasnt sure why my car wasnt working properly...and then I realized what was wrong

(Im such a dumbass)

That my friends is what i call...a valve seat...in my hand.

They say you learn from your mistakes and this is a clear case.You learn something new everyday 😄

Massive thanks for the help!!
And YES ,next im gonna be at the tuner😂

See less See more

Save

slo_eg8

· #10 · Sep 3, 2020

robgoof said:
wg fire ring valve seat in place facing the right way?

a faulty wg will usually over boost.

my dudes a psychic!

Save

Reactions: 2

robgoof

· #11 · Sep 3, 2020

slo_eg8 said:
my dudes a psychic!

if I was only still 2003 jazzing around at Franks imaginary garage...

Save

Reactions: 1

1 - 11 of 11 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month