Anytime I have to replace parts I prefer to upgrade them if possible and the Lex/550 is so well documented it's a no brainer and it's not like the old days where injectors were expensive.
One will be for the oil gallery at the front right side of the block behind the power steer pump the other will be the same gallery but at the back as pictured. (blue arrows)
Most "reman" racks are a very basic clean and replace seals kind of deal as the hard parts required for a full rebuild are expensive and hard to get :(
(an example is the main steel tube the rack lives in is over $1000 on it's own here, a couple of the pinion bearings were really hard to source...
You're trying to release as MUCH air as possible as quickly as possible to prevent surge, if you restrict the BOV in any way it can't do this and if you're running a big enough compressor section on the turbo it's going to be an issue.
As an example my 7M with the T04z (a known surge monster)...
And here's why I won't tint windows.....
IF you keep the windows tight it marks up the tint in weeks, if you run them loose enough not to mark the tint they wobble if not fully up or down, toss into that mix the damage some installers do to prevent rubbing especially on an old car like a Mk3...
There are many high HP 7M's running with heavy valve springs that aren't killing the AUX pulley, I still say at some time in its past someone has marked nicked a spoke during install and being a sintered part it's a fail point, buy a new stock pulley deburr it carefully and install it exactly as...
You start with the solid spacer + xx shims then remove shims as required to achieve the correct preload, the shims are under the nut so don't affect pinion depth which is set by the base bearing to pinion spacer shim.
Only time that will happen is if wankers come in here saying "I fitted xxx aftermarket coil now my GE makes so much more power I'm beating GTE's"
If a new AM coil is that much of an improvement the stock coil was either dead or dying and replacing it with a new factory coil would have given...
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