Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: rotary_rogersFC on September 14, 2005, 09:54:03 PM

Title: how does the pressure look on this fd.
Post by: rotary_rogersFC on September 14, 2005, 09:54:03 PM
hey guys looking at buying an fd project car and just wondered what you think. i got three pics one at cold idle, one at warm idle and one at warm 3500rpm. its a 94 jdm type r with almost 50,000 miles on the clock. runs really nicely smooth idle and smooth revving havent test drivin it yet tho and new plans of buying a run around 306 for the year while i get out of debt mean this might be on the cards as a project.

(http://img.photobucket.com/albums/v57/vz-r_dave/mazda%20rx%20turbo%20two/Engine1.jpg)

(http://img.photobucket.com/albums/v57/vz-r_dave/mazda%20rx%20turbo%20two/1500Revs1.jpg)
the cold idle dropped to around 1100rpm right after i took the pic.

(http://img.photobucket.com/albums/v57/vz-r_dave/mazda%20rx%20turbo%20two/Idling1.jpg)

(http://img.photobucket.com/albums/v57/vz-r_dave/mazda%20rx%20turbo%20two/3500revs1.jpg)

cheers for looking guys.
Title: how does the pressure look on this fd.
Post by: nikp on September 14, 2005, 10:05:22 PM
Problem is, you can\'t go relying on the stock oil pressure gauge - it can be unreliable at the best of times, so it\'s really difficult to tell. Best thing to do is get it compression tested - that\'ll give a good indication to the sort of condition the engine is in. Make sure it\'s had a good oil change. And all the basics really!
Title: how does the pressure look on this fd.
Post by: antnicuk on September 14, 2005, 10:57:54 PM
if its done 50k without evidence of a recent rebiuld,  it doesnt matter what the clocks say,  expect a rebuild shortly
Title: how does the pressure look on this fd.
Post by: rotary_rogersFC on September 14, 2005, 11:03:56 PM
ok cheers guys, i should be picking the car up for pretty cheap anyway so im not to worried but would like it to last a bit before it needed the new build. are rotary comp testers easy to come buy.
Title: how does the pressure look on this fd.
Post by: antnicuk on September 14, 2005, 11:05:55 PM
no,  the proper ones are from Mazda as far as i am aware.  Take it to Tim, Geff or one of the others.
Title: how does the pressure look on this fd.
Post by: Martiny on September 15, 2005, 08:50:52 AM
I think someone is making a Compression tester, maybe jump on to the Rotary bike forum, I seem to remember some of them bought one.
Title: how does the pressure look on this fd.
Post by: the lemster on September 15, 2005, 11:03:50 AM
Quote from: antnicukif its done 50k without evidence of a recent rebiuld,  it doesnt matter what the clocks say,  expect a rebuild shortly


oh the eternal optimist!!!

mine has done 70 odd k and is still as sweet as a nut...

if the car has been abused it might go... but the same can be said for any car... rotaries get such a bad name for \'reliability\' but it aint all that bad... the only two I know personally that have gone have been due to driver abuse or poor maintenance... lack of oil and coolant and then raggin it... you dont put oil in a fiesta and it will go bang... were you hurt by one in the past... did it run off with urex ( hehehe pun intended )

if these cars were so unreliabe why are they getting ever so more popular  I k of sme that have done over 100k miles and still going on original engine...

its just down to luck... you ahve to think why is the owner gettinr rid...

personally I think that the oil pressure unit is sitisfactory and consistent ( if not the most accurate) I am sure that mazda weould not put a part in a 30k car that didnt work properly...

sorry for the rant but I am tired and emotional!!!
Title: how does the pressure look on this fd.
Post by: nikp on September 15, 2005, 11:09:45 AM
It\'s not that the gauge is innaccurate as such - just that after time can get \'gunked\' up and start to misread and perform badly.

But I would have to agree, the rotary gets a bad name, and doesn\'t necassarily deserve it. I agree that there shouldn\'t be any reason really that any engine should need rebuilding as long as it is treated well, and modded properly.

However, I think i\'m losing water! In the past 2 months now, i\'ve had the low coolant buzzer go off! uh oh! Gonna give it an oil change and coolant change next weekend.
Title: how does the pressure look on this fd.
Post by: andyrose on September 15, 2005, 04:45:58 PM
buy it! you know you want too!
Plenty of US cars running ok well over the 100k mark, all depends on servicing etc.
Andy
Title: how does the pressure look on this fd.
Post by: FD3SNuttah on September 15, 2005, 04:52:53 PM
you dont need more oil pressure mate, you need some petrol so you can get a decent fuel pressure!!
Title: how does the pressure look on this fd.
Post by: Ada7 on September 15, 2005, 04:56:26 PM
Quote from: TURBOIINUTTAHyou dont need more oil pressure mate, you need some petrol so you can get a decent fuel pressure!!
Beat me to it :rollin

Adam
Title: how does the pressure look on this fd.
Post by: Trevrx on September 16, 2005, 07:01:43 PM
Looks fine to me,  does it start ok when hot too?

Did you try the air con at idle?  It may struggle to tick over if it has a compression problem.  Also, boost gauge may be bouncy at idle if prob.

That\'s the first air filter I\'ve seen the same as mine btw!  Fit a heat shield over the coolant rad and hose, makes a big difference.
Title: how does the pressure look on this fd.
Post by: rotary_rogersFC on September 16, 2005, 11:35:42 PM
the car starts and idles really nicely both hot and cold, coolant and oil levels are good althought the oil is in need of a change very soon. cheers for all the help guys i appreciate the tips.
Title: how does the pressure look on this fd.
Post by: gsb876 on September 17, 2005, 06:06:35 PM
As far as pics go they all seem about right, as the others have said its hard to gauge the engine just from the dash readings, if you are not that bothered about the engine anyhow then i guess buy the car as @ 50K you may still get another 20K out of it yet, 60K rebuild is a guideline not cemented.
My previous fd had 64K and pulled as normal and started hot/cold without fault, the less mods it has perhaps the less the engine can be abused.

Once you get it change oil / filter / coolant straight away.
Title: how does the pressure look on this fd.
Post by: Warthog on September 17, 2005, 06:49:27 PM
Good luck and welcome to the FD clan. You will enjoy the pure pleasure of ownership and envy that a Rex brings. ( As well as the empty wallet that modding can bring  :rollin )
Title: how does the pressure look on this fd.
Post by: rotary_rogersFC on September 18, 2005, 01:30:57 PM
lol aint bought it yet my my fc is up for sale and i have my new daily driver astrs estate lol. the joys of the boat like suspension is great.