BayAreaLex

If so, where in the world are they, and can loose subframe bolts lead to clunking over bumps?

Anyone have a pic of these mysterious subframe bolts?

Thanks,

Luke

MikeFoxx

iTrader: (8)

Not sure if this is the subframe brace ur talking about... I put these on when i lowered my car to help with preventing rear wheel hop. I remember the bolts that hold these in place look just like the 10mm bolts on the headlights just slightly longer.





Old brace with the two bolts

BayAreaLex

Hi Mike,

I actually have no clue what I am talking about, lol. I've just seen several threads over the past few weeks that said if your suspension is clunking over bumps, check the "subframe bolts"

I don't know what they, where they are, or if there are front/rear ones?

I'm hoping someone can shed some light on this.

I will check the two bolts you are showing for tightness however.

sam12345

iTrader: (1)

There are 4 bolts that hold the subframe below the engine

MikeFoxx

iTrader: (8)

Ohhhh lol dunno bro i would PM one of the folks in those threads. Haven't read that yet only because i dont have that yet... Yet lol we all share the same issues at some point.

I dont think my response is your answer to this. Sorry bro.

BayAreaLex

Sam, are you saying the the subframe connects the engine to the chassis (in the Mustang world this would be called a K-member - it also has 4 bolts).

If someone can show a pic of this, that would be awesome.

sam12345

iTrader: (1)

Third picture on post 29

https://www.clublexus.com/forums/gs-...attempt-2.html

You can see it is got a gap and the nut was already removed

BayAreaLex

Mike, are you saying that you have a 2GS without suspension problems???

MikeFoxx

iTrader: (8)

Yeah for now... I replaced a bunch of stuff about a year ago. No suspension issues at this time.

BayAreaLex

Got it, I'll check those 4 bolts. I'd imagine the torque spec is like 100ft-lbs?

BayAreaLex

totally bizarre!

sam12345

iTrader: (1)

http://lexus.sewellparts.com/oem-cat...S400-1998.html

Front and back subframes

BayAreaLex

Sam that's a great illustration.

I wonder if the bolts are easily accessible?

I highly doubt these bolts are loose, but might be worth a look.

BayAreaLex

Mike, off-topic, did those arms eliminate your wheel-hop?

MikeFoxx

iTrader: (8)

Lol if i had to find a problem it would be thst im not on air yet.

Sam got some very useful info posted up. I replaced most of my suspension through sewell. I hope his post helped narrow it down. Cya around at the meets this year!