My Budget S51.5 Swap. w000t

[RobertK]

Why the fuck do people do this. The Porsche one bolts right in and all you have to do is Make more threads. Relocating the stock booster is hack.

Because side by side they do not feel close to the same.

iX Booster / 735iL Booster has a MUCH better / more natural feel than the Porsche booster. I have multiple swap cars in my lot with different booster setups (Porsche / E21 / 540i). Anyone is welcome to come by and prove me wrong.

I have driven swap cars with all kinds of different boosters. The E32 735iL / 740iL / E34 540i booster and master is hands down the best setup for someone looking for a natural power assist feeling in the pedal. The E21 and Porsche boosters provide less assist and a much stiffer pedal feel.

I find that most of the people that knock this setup are the ones that have never even had one or driven a car with that setup.

We let customers test drive the different swap cars here at the shop so they can decide what brake setup they want beforehand. All I can say is we have never had a single customer request a Porsche or E21 booster.

Its not to say that neither are a good choice, it really depends on how much brake assist you prefer.

[mpowerful]

Put in some more work today. This time prepping the 944 booster. I lucked out and got the ate which has 10mm shaft. Took the shitty clevis off which was bound on pretty tight. Then I threaded it down using the 10mm x 1.5 die. All I have left to do is cut the extra thread off and put the e30 clevis on. I will do that when I have my booster out to compare it too lengthwise. I then sandblasted it good. It had some pretty decent surface rust no doubt from brake fluid being all over it for god knows how long. The porsche MC was leaking into it when I pulled it. Anyway then primed and painted black. Ready to rock and roll.

[mpowerful]

Got her on the stand and started the tear down. Gonna try to get the cams done in next couple days.

[mikegar]

^OBDI S50 tune/cams in OBDII M52B28 it looks like from the thread anyway.

SO, like an S50B28. But not.

I see. So mine would be a J51.75 B28

[TimKninja]

why the porsch booster? i mean i understand u got it cheap anyway but if ur doing budget swap why not just drill new holes and move stock booster over

Why the fuck do people do this. The Porsche one bolts right in and all you have to do is Make more threads. Relocating the stock booster is hack.

[Wh33lhop]

I've been running a 735i booster and mc for 4 years now. No mods necessary.

Just looked into this further and the E32 master is not all that well suited to the E30 chassis due to more front-heavy bias, though it will hook up and work fine. The 325ix master would be preferable from a performance standpoint in this case though not completely necessary.

[mpowerful]

^OBDI S50 tune/cams in OBDII M52B28 it looks like from the thread anyway.

SO, like an S50B28. But not.

exactly

[Wh33lhop]

I've been running a 735i booster and mc for 4 years now. No mods necessary.

[Farbin Kaiber]

^OBDI S50 tune/cams in OBDII M52B28 it looks like from the thread anyway.

SO, like an S50B28. But not.

[mikegar]

Whats S51.5?

[mpowerful]

Well here is what I gather.

1. Porsche booster. Nearly identical in size and design to ix/735i booster. Uses stock e30 master. Clevis rod has to be threaded down and excess 1/2" or so cut off and use e30 clevis. Simple enough.

2. 735i booster. Bolts in. Must use 735i master. Master has bigger fitting sizes so it will require adapter for lines.

3. IX booster is same as 735i booster but uses an e30 master. The master is not interchangeable between the 735i and IX even though the booster is essentially the same.

I actually got a 735i master and booster the same day I got the porsche one. The masters at the junkyard I went to are more expensive than the boosters by like 2x. Anyway e30bulldog needed a booster for his swap so I sold him the 735i one.


**** That and I spent two hours in the footwell of that 944 getting the clevis pin unstuck. In fact i had to cut the clevis off with a dull ass hacksaw because the pin was rusted into the clevis. I need hacksaw blades. Anyway the porsche one is mine from it being so personal.

[Mistawall]

is 944 a good way to go? i wanted to avoid drilling my firewall too.. was gonna go with ix booster but havent got anything yet. im trying to gather all the parts i need to swap all at once as well

[mpowerful]

Because it was 20 bucks. Id rather not drill my firewall. This allows me to pop a booster in with minimal downtime to rather than messing with taking everything out of the way to measure/cut new holes needed. I daily my car. Should have mentioned that. I am gonna try to have the swap 100% droppable innable in a weekend.

[Mistawall]

why the porsch booster? i mean i understand u got it cheap anyway but if ur doing budget swap why not just drill new holes and move stock booster over

[mpowerful]

It does if i didnt pay for it right?

Not to mention I didnt get those free parts by traded stuff i bought. Specifically im sure your referring to cams. The top was given to me. As in no trade. In fact thats the only trade on the list. So yeah.