bishop1950

While working in cleaning up radiator hose connections , I noticed oil over the area and saw this 1/8" tube broken . That explains the oil ! See attached photo of broken tube .
Should I replace all the tubing . Three options here
1 buy oil tube from Mazdatrix at 55 each x 4 or just one
2 just replace the tubing . ten ft for 15 bucks ?
3 just repair tube ?

dannobre

iTrader: (3)

I would replace them all...they get old and brittle....and if one breaks it is likely that others will follow

Legot

iTrader: (1)

Out of curiosity, is there any reason that the omp lines and banjo bolts can't be replace with some sort of oil proof vacuum tubing and threaded hose barbs?

Mysterion

Personally, I would stick with the OEM metal lines as there may be a pressure issue or a problem with the tubing degrading due to the oil in it with the setup you described. However, if I went with flexible lines, I would try a Parker Hose dealer to see if they could supply a steel-braided hydraulic hose and crimped-on hydraulic fittings, both of which meet the pressure requirements plus be impervious to the oil passing through them. The banjo fittings are available for such an application, as a rule. The only possible problem might be the hose size being so small compared to most normal hydraulic hoses.

Legot

iTrader: (1)

This is about the omp lines, which are a hard plastic and quite small.

bishop1950

There is a thread about replacing the tubing on the RX7 site
I am looking for a site that will sell me 1/8'ID 3/16"OD tubing type Teflon PFA ... 10 ft of it
Several types of tubing will work.
I am just glad I found it !!!

9krpmrx8

iTrader: (46)

People have tired other types of lines and I have heard of the braided lines leaking on the FC's but it of course depends on the lines used, fittings used, and who is putting them together. You can do whatever but the factory lines are just fine, lasting ten years in the environment they see is pretty good IMO. I have never seen or heard of them failing prematurely.

bishop1950

The 1/8 id teflon PFA tubing is rated for 300 deg and 200 PSI

logalinipoo

Those lines don't carry pressure unless you have a clog in the system.

If you want a really good hose for the Applicantion go to parker and get -3 919 hose It's stainless braided PTFE. Rated for 400+ deg and probably 1500 PSI in that size.

Crimp them on your same banjos and be done with it.

Legot

iTrader: (1)

http://www.rx7club.com/2nd-gen-archive-72/rebuilding-omp-oil-injection-lines-348068/

The the ptfe tubing they used here seems like it worked out. It seems like the oem lines are hdpe which, like most things, will get brittle through heat cycling. I'm under the impression that most of the cost for stock lines comes from the fittings and specially formed tubes.

9k is right though, the oem lines are a near perfect option, I'm just exploring ideas.

bishop1950

Sir please tell me how to contact Parker ? Website ? Please

9krpmrx8

iTrader: (46)

If you can't figure that out then you surely will not be able to remake these lines with products from Parker. Just buy OEM lines and save yourself a lot of heart ache.

logalinipoo

I'm not trying to be mean, but 9k is right.

Legot

iTrader: (1)

Agreed, it's far too important a thing to make mistakes on.

bishop1950

I have never heard of Parker before !! But you guys are out of line with that comment !!
I come here for some help and get belittled ! You should be ashamed of yourselves !!!!

RIWWP

iTrader: (2)

bishop, they are right. It isn't belittling you, it's just pointing out that this isn't something you shouldn't be messing with if a quick google search is beyond your skills. It's a "tough love" if you will. We have a very strong aversion here to just handing over information when demanded. There is a minimum of self-education and self-help that we expect other members to have. We are happy to offer advice, but we won't hold your hand through everything as if you were a kid. We expect that you are an adult, so if you show an unwillingness to take steps yourself, or an inability to do simple tasks, it makes us grind in our heels and stop offering information or help.

Yeah, you probably don't see anything harmful of asking us for a link, but it would be faster, more direct, and more useful for you to have simply googled the company name. It puts us off more than a bit that you weren't willing to do that and wanted us to do it for you.

bishop1950

I have a severely disabled wife here at home ! I still work some , I have 65 Japanese koi .dogs and cats to care for My plate is full ... This is not my fist rodeo .!!! I did a search for Parker and came up with janitorial supplies !!!! One industrial site in Texas . Then I ask for some info from a suggestion .
I have read your stuff here till my eyes bleed .... done all that ten mods that is possible for a new owner for a 100 bucks ...but am running into other issues such as a broken oil injector line !!
Radiator hoses leaking .. from mineral build up ....
I think I will just order a replacment line from MazdaMart because I do have too much to do at this time .

9krpmrx8

iTrader: (46)

Whoa man, don't be so sensitive. Parker is one of the largest hose/fitting suppliers in the U.S., a quick Google search would show you many suppliers. That said, you have to understand that many come here expecting to be spoon fed. Not saying you are, I understand you have a lot on your plate, we all do. But a project like this requires due diligence so you would be better served doing some proper, prior, planning. Not all the advice here is always good advice.

Mysterion

Parkerhose.com main page - Parker

You may have to search a bit, but that will get you started in the right direction.

bishop1950

Thanks 9k
I understand I am more than willing to do my home work !!! I want my rx back on the road ASAP
Revving her to 9 K sure goes make me smile ..
When a simple project like pressure testing the cooling system turns to all hell and a hand basket ! But I am a firm believer in things always work out for the best . As the broken oil tube was behind the alternator bracket ! If I was not in the process of removing all radiator hose I would not have seen the broken tube ... So Happy to have found that broken tube !!!!! Things happen for a reason !!!
I am smart enough to know I dont need to make the same mistakes you guys have made !
I need help and will do the work .....

bishop1950

Thank you so much Ill call them in the morning !

bishop1950

UPDATE to broken oil tube
I contacted Parker tubing and their local dealer . They would be glad to sell me a 100 ft roll . Granger same thing ! Found a piece of PFA tubing on amazon reasonably priced . How ever
I went to my local small engine shop and they had the Teflon PFA tubing in stock by the inch . Gas lines for small engines rated fo 300 deg temp.
I ended up using a small piece , to repair the broken line !!!! for now ...

niteshade247

Did you prime the line? Do some looking into premixing as if you have one of the other lines brake having some premix in the tank is better than running with a dry oiling system. Any safety measure you can take for peace of mind with a rotary could mean the difference between a $5000 engine and a $50 part.

patriotjj

The way you type gets me hyped up man, im all waking up getting energized reading your post. But good job man, glad its all working out!!!

bishop1950

I am using a premix . I added that in before I started it up . My engine is a series 1 . so Premix IMHO is a must !I see no need to prime injection tube . I started it up and watched oil flow though tube .
Things done
! Cooling system pressure tested and leaks repaired .
2 map valve cleaned
3 ess sensor cleaned
4 battery terminals cleaned
4 hole in under pan was repaired usind lid from a tote cut to fit and pop rivets gorilla duct tape
I have an after market front end ... have to get screens over oil coolers to do list
5 reset ac controls
6 recharged ac system after pulling a vacumm for several hours low levels for now
7 Oil an filter change
8 reset information display it now reads Griffs RX8 grin
9 reset time
10 hours and hours of reading !!
This is what I am working on
My RX8 with extras
5