question regarding replacing vacume hoses
 

ok so my motor blew the coolant seals and so im putting in a mazda reman. i was going to do the vacume hose job before the motor went because all the ruber is hard and not doing its job. now this is probably a stupid question but how much easier would it make doing the vacume hose replacement while the motor out? and what would be some of the absolute must do's remembering that right now im really stretched financially.

It would be approximately 567% easier to do with the motor out.

It is the ideal time to do a vacuum hose replacement. When you replace the block there are many things that you bring over from your old engine (i.e., fuel injectors, fuel rails, all of the solenoids, oil metering pump, turbos, UIM, LIM, etc.). Consequently, when transitioning these components to the new block, just take the opportunity to replace all of the old vacuum lines. It is not that difficult especially since you have the routing right in front of you. Take one hose off and put one hose on. Take another hose off and put another hose on. Use the many diagrams on here if you get mixed up. I would also take a diagram and double check your work before you get other compenents on the block that will be in the way later if you get a hose on wrong. Some advise against using silicone hosing for the oil metering vacuum lines as they do have some exposure to the oil and they become wimpy. Some also like to tie the ends of the vacuum lines for a better hold.

Must do's:

- Hoses
- FPD
- Miata Thermoswitch (good idea at least)

Yeah, it's WAY easier. It's actually best to have the engine on an engine stand and build up all the components on the motor before you put it in the car. The vacuum hose job is a zillion times easier with the metal vacuum spider removed from the car so you can work on a toolbench or the like.

Dale

i remeber reading a few days ago but i cant find the thread again a few people were saying there are 3 options for what material hose to use rubber, silicone, and another that started with a v. and that 3rd option that i cant remeber is what most seemed to agree on as being the best option. does anybody know what it is that im talking about?

Start searching and reading, you need to know what you're talking about first. If you know you read it before, it should be a red flag to STFU NOOB and use the search tool.

like i said above i have been searching for a couple hours today on this and i havent been able to find the threads that i read about it in. any if you know anything about what im talking about then doesnt it take more effort for you to act like a dick and tell me to shut up and use the search tool after i already said i did than to actually mention any info you may have? you know im not asking for any long explanations or anything just a couple quick questions. also if anyone does know the stuff im talking about if you also know where i could get it that would be great.

A hose material that starts with a "v" could possibly be viton. I remember reading a thread about viton hoses, started by a member called High Temp Silicone (I think).

thats the stuff. anyone know where you can get it?

Now you know it's called viton, and HighTempSilicone sells it, so it's really time you try to search. Is this getting old for you yet? Maybe because it is.

I was tempted to paste in a bunch of links when I searched using 'silicone hose job', but I'm beginning to think you can't read.

Dave

viton available at mcmaster.com aprox. $200. my tubing is still supple after 32K. wish someone made a wiring harness with material of the same characteristics.

Silicone hose from Baker Precision; $34. My hose is still supple after 40K and an engine fire :p: