Hi every one my name is Corey i live in australia and i am looking at buying a cosmo i would like a 20b the only thing that i am unsure about is the auto can any one please give me any information like what to look out for in buying a cosmo common faults etc any good places to find body kits and other random parts and all information is welcom thank you all
Hello
- Thread starter Corey w
- Start date
Dave will be able to elaborate more on what to look out for but some of the more obvious ones are...
Compression - if the motor is standard, expect around 100 to 110PSI at 250RPM. If the motor is ported, 90 to 95PSI for an extend port. (Not the best figures but fairly safe.)
Coolant leaks - look under the bonnet lining, if there is any white film or residue then it means there is a coolant leak somewhere.
Vacuum leaks - Make sure that the car will run without stalling with the aircon on and off, in neutral and in park etc. Also make sure that the car's turbos are boosting correctly. The 20B should register about 172Kwatw standard. Boost should go to 0.7bar in first gear and stabilize at around 0.5bar.
Water Seals - start the car from a cold start without the radiator cap on. If there are bubbles, then you have a busted water seal.
Electronics - parts are hard to come by, especially things like alternators, window switches etc.
Automatic - look for smooth changes between first and second. Also, poorly maintained Cosmo auto's will slip under acceleration.
Suspension bushes - The 20B creates a lot of torque. This usually results in shagged bushes. Not really a problem until you see how expensive a full set of replacement bushes are.
These are the main ones I encountered when looking for Cosmo's a few years back. Hope it helps!
Compression - if the motor is standard, expect around 100 to 110PSI at 250RPM. If the motor is ported, 90 to 95PSI for an extend port. (Not the best figures but fairly safe.)
Coolant leaks - look under the bonnet lining, if there is any white film or residue then it means there is a coolant leak somewhere.
Vacuum leaks - Make sure that the car will run without stalling with the aircon on and off, in neutral and in park etc. Also make sure that the car's turbos are boosting correctly. The 20B should register about 172Kwatw standard. Boost should go to 0.7bar in first gear and stabilize at around 0.5bar.
Water Seals - start the car from a cold start without the radiator cap on. If there are bubbles, then you have a busted water seal.
Electronics - parts are hard to come by, especially things like alternators, window switches etc.
Automatic - look for smooth changes between first and second. Also, poorly maintained Cosmo auto's will slip under acceleration.
Suspension bushes - The 20B creates a lot of torque. This usually results in shagged bushes. Not really a problem until you see how expensive a full set of replacement bushes are.
These are the main ones I encountered when looking for Cosmo's a few years back. Hope it helps!
Thanks every one for the warm welcome. I am still loaded with questions about fd rx7's and cosmos can any one point me in the direction to some one who has done the 20b conversion in a fd. The thing that appeals to me the most about the cosmo is the fact that it is a 20b factoury but it is heavy and an auto so if any one can tell me about what is needed to dot he 20b conversion what type of power to expect from one with some mild port work and larger much larger turbos again any info from some one who has done this would be great thanks heaps for all of your help
G'day from DMRH
Things to look at with a JC Cosmo.
Engine compression. Typical cranking speed is 250rpm - 300rpm depending on battery quality. Make sure its done on the Trailing plug with the Leading plug still installed. Also helps to have all-three Trailing plugs out at once.
A good reading should be 7.0-Bar (100-PSI) although a typical reading will be nearer to 6.3-Bar (90-PSI). 5.6-Bar (80-PSI) means its time to think "REbuild" & if its as low as 4.9-Bar (70-PSI) then the engine should bearly be able to start meaning "definate" rebuild time.
Top tanks for the radiators eventually crack & leak (fatigue)
Rear suspension bushes wear & clunk
Window switches burn out & fail.
Turbo control soleniods with vacum hoses all fatigue, crack & give boost control problems
Auto trans will fail if oil isn't changed every 30,000km at minimum
Front discs warp & then wobble due to small disc size & heavy car
Leather seats wear badly when not maintained
Type-E.CCS touch-screens all fail with time
Plenty of other smaller issues but the important thing to remember is that they are all "fixable"
Things to look at with a JC Cosmo.
Engine compression. Typical cranking speed is 250rpm - 300rpm depending on battery quality. Make sure its done on the Trailing plug with the Leading plug still installed. Also helps to have all-three Trailing plugs out at once.
A good reading should be 7.0-Bar (100-PSI) although a typical reading will be nearer to 6.3-Bar (90-PSI). 5.6-Bar (80-PSI) means its time to think "REbuild" & if its as low as 4.9-Bar (70-PSI) then the engine should bearly be able to start meaning "definate" rebuild time.
Top tanks for the radiators eventually crack & leak (fatigue)
Rear suspension bushes wear & clunk
Window switches burn out & fail.
Turbo control soleniods with vacum hoses all fatigue, crack & give boost control problems
Auto trans will fail if oil isn't changed every 30,000km at minimum
Front discs warp & then wobble due to small disc size & heavy car
Leather seats wear badly when not maintained
Type-E.CCS touch-screens all fail with time
Plenty of other smaller issues but the important thing to remember is that they are all "fixable"
The Cosmo is not a 'slow' car. 
Getting a 20B into a FD would cost a lot of cash. FDs are not cheap. It can be done and has been done in Australia. However I don't know what the current laws are like for that sort of thing.
Buy a Cosmo, spend money on fixing everything that needs fixing and then cruise around in comfort. A properly working Cosmo is super car fast and your girl friend won't get spinal injury from riding shot gun
Getting a 20B into a FD would cost a lot of cash. FDs are not cheap. It can be done and has been done in Australia. However I don't know what the current laws are like for that sort of thing.
Buy a Cosmo, spend money on fixing everything that needs fixing and then cruise around in comfort. A properly working Cosmo is super car fast and your girl friend won't get spinal injury from riding shot gun
i have found some one to do a fd conversion to a 20b with 17k with a larger turbo stand alone ecu and cooler and my girl friend riding shot gun hahaha she hats my current ride and wont get into that so it wont be a probilem lol the only thing that bothers me about the 20b conversion is that it needs a new sub frame
30,000 for transmission oil sounds excessive?
May i ask what car your coming from and what sort of power/performance your looking for? and the purpose of the car. you seem to want an extremely quick car, as a few upgrades on a 20b cosmo or rx7 gives u great speed quickly. i believe more than what most can handle, although rotary chassiss are best at handling that power (my thoughts anyways)
very interesting that your willing to throw 17k at an rx7 just to change the engine etc.......
20b's in rx7's ruin their balance also dont like seeing Cosmos being ransacked for their engine's becoming extinct they are.
If you really want extra rotor's im sure iv seen a place in New Zealand they sell new 13g, and 13j engine's. 3 and 4 rotor n/a starting at 500hp.
cant find the site. unfortunately and forgot the price.
I'm happy with merely 2 as i think its thirsty enough although I choose it for a tuning base. I believe most v8s are more economical.
i say just go for whichever car is calling you.
with 17k and cash to buy a car, I would just buy a series 8 RX7 with low KMs and tweak that. One of the best looking cars ever made and local parts.
If you are looking seriously at doing some hard core modifications, buy a Cosmo from Japan for 4k and use the engine out of that. A rebuild + porting would be on the cards anyway, so it does not matter if the japan donor car does not run.
If you are looking seriously at doing some hard core modifications, buy a Cosmo from Japan for 4k and use the engine out of that. A rebuild + porting would be on the cards anyway, so it does not matter if the japan donor car does not run.
Antoine
Administrator
Buy a Cosmo, spend money on fixing everything that needs fixing and then cruise around in comfort. A properly working Cosmo is super car fast and your girl friend won't get spinal injury from riding shot gun
Exactly!
There is your answer!
Don't let another Cosmo get used & absued for its 20B...Rescue one, Repair it and Restore it to new glory!!!
i am coming form a 200rwk sw20 mr2 turbo the reason for the cosmo is because i like there size and shape ect but the most attractgive part is the 20b and the rx7 is mor along the lines of the mr2 (in the style department)
My thoughts were this i like the cosmo but there heavy and an auto 2 things against it but there big and cruizy so dump it on the deck and big wheels upopend motor i like the idea of that but the rx7 lighter sexier easier to get parts for and it is a manual so i wanted the best of both worlds a 20b in the fd would give me the motor the sports feel manual and i wouldnt have to open the motor to get decent power tho with more reaserch i am being commonly told to stick with the rx7 and get a to4z turbo and supporting mods with out opening the motor i can reach the 220 rwk mark i would be happy with that (for now hahaha)
Please rember i have not driven a cosmo so if i am being unfairly hard ont he car in the handeling department please correct me and i think that the cosmo would look great as a vip style so do i go race or vip i think is the biggest choice i have done the race thing for a while so vip is appeling to me but hard to tell i need to look at some more cosmos thanks every one please keep the comments up
My thoughts were this i like the cosmo but there heavy and an auto 2 things against it but there big and cruizy so dump it on the deck and big wheels upopend motor i like the idea of that but the rx7 lighter sexier easier to get parts for and it is a manual so i wanted the best of both worlds a 20b in the fd would give me the motor the sports feel manual and i wouldnt have to open the motor to get decent power tho with more reaserch i am being commonly told to stick with the rx7 and get a to4z turbo and supporting mods with out opening the motor i can reach the 220 rwk mark i would be happy with that (for now hahaha)
Please rember i have not driven a cosmo so if i am being unfairly hard ont he car in the handeling department please correct me and i think that the cosmo would look great as a vip style so do i go race or vip i think is the biggest choice i have done the race thing for a while so vip is appeling to me but hard to tell i need to look at some more cosmos thanks every one please keep the comments up
most of what im saying is probably farfetched dependant on budget. i plan on doing the same some day..... as i dont want to sell my car ever.
the mr2 is quite twitchy isnt it especially with power. i know people that have wrecked some. with your budget you could probably get a ppg dogbox or more extreme in there which is what your eventually really going to want.
nowdays you probably want a 7 speed you can paddle shift with no clutch.
as for weight iv been looking into companies that can remake the body in carbon fibre. probably wont be legal if in an accident but its probably too late then.
anyways i think just about all gt cars and a majority of sportscars are heavier. new gtr is 1740 vs its 1570 for 20b stock.
as for being cruisy it doesnt have the sort of suspension you would expect it to have i think its very firm probably the hardest iv felt seeming its still standard. remember it has proper rose joint suspension no rubber there.
i sometimes drive an 06 maxima and it feels like it bounces too much and im somewhat floating as i can barely feel whats going on.
that being said rx7 is one hell of a car. with so many cool kits available.
and they are rare enough i hardly ever see them on the road.
a cosmo with asanti or lexani wheels would be the s***. havent seen one yet.
the mr2 is quite twitchy isnt it especially with power. i know people that have wrecked some. with your budget you could probably get a ppg dogbox or more extreme in there which is what your eventually really going to want.
nowdays you probably want a 7 speed you can paddle shift with no clutch.
as for weight iv been looking into companies that can remake the body in carbon fibre. probably wont be legal if in an accident but its probably too late then.
anyways i think just about all gt cars and a majority of sportscars are heavier. new gtr is 1740 vs its 1570 for 20b stock.
as for being cruisy it doesnt have the sort of suspension you would expect it to have i think its very firm probably the hardest iv felt seeming its still standard. remember it has proper rose joint suspension no rubber there.
i sometimes drive an 06 maxima and it feels like it bounces too much and im somewhat floating as i can barely feel whats going on.
that being said rx7 is one hell of a car. with so many cool kits available.
and they are rare enough i hardly ever see them on the road.
a cosmo with asanti or lexani wheels would be the s***. havent seen one yet.
yeah the mr2 can be twitchey but like any thing it has to be set up right and you will be fine
i do not want to go over the top with the cosmo just on the deck and big wheels i didnt know that they have rose joints and that they were so stiff i have done the racer thing for a while so i am thinking the vip style but i have no luck with finding any kits for the cosmo and to be honest i am struggling to find manby that are modded very much at all
yeah there are alot of kits for the rx7 but honestly so many of them i do not like i want it to be smooth if i got one
i do not want to go over the top with the cosmo just on the deck and big wheels i didnt know that they have rose joints and that they were so stiff i have done the racer thing for a while so i am thinking the vip style but i have no luck with finding any kits for the cosmo and to be honest i am struggling to find manby that are modded very much at all
yeah there are alot of kits for the rx7 but honestly so many of them i do not like i want it to be smooth if i got one
i think every body on the fd is sweet that is fd exclusive.
a majority of cosmo's are tuned somewhat. compared to other cars out there. not many complete builds. check out the Proud new owner of a Cosmo thread, my post there. for kits their kinda subtle. heres a few custom jobs.
a majority of cosmo's are tuned somewhat. compared to other cars out there. not many complete builds. check out the Proud new owner of a Cosmo thread, my post there. for kits their kinda subtle. heres a few custom jobs.
