Jump to content
SAU Community

Recommended Posts

Hi,

If you have read my recent posts here you would know my car is running like crap below boost but runs fine onboost. I took it to MRT today <puts on flame suit> to get my suspension aligned and they did a check on the compression at the same time. They said that I have to get all the coil packs replaced (yes I know that is crap, but I am getting spitfires anyway) and that number 3 cylinder is low on compression. Now I want to know if the car is running OK after replacing the coils, would I nessesarily have to strip the engine down? Surely a small drop in compression on one cylinder is not grounds for a full rebuild. Whats the "braking point" when it comes to compression levels and rebuilds. I mean the car has at least 110000ks on it (if not more) so I know it is wearing out, but it doesnt feel like a car that needs a full rebuild. Is there anything else I can do to keep it running OK without a full rebuild?

Bryce

Link to comment
https://www.sau.com.au/forums/topic/157339-would-you-rebuild/
Share on other sites

Hmm.... well I found out number 3 = 80 compression.

Not good...

So am I now making it worse driving it around?????

Also anyone know a good engine builder in Sydney who doesnt charge the earth? I am sure it is just the piston/ring as all other levels are perfectly fine (oil preasure, coolant, temps etc). I am not after a fancy rebuild with forged pistons etc. Close to factory (with say a restrictor plug for the oil added to the head, and an N1 oil pump). How much would I be looking at for labour if I sourced the pistons, rings, oil pump, and restrictor myself?

Hmm.... well I found out number 3 = 80 compression.

Not good...

So am I now making it worse driving it around?????

Also anyone know a good engine builder in Sydney who doesnt charge the earth? I am sure it is just the piston/ring as all other levels are perfectly fine (oil preasure, coolant, temps etc). I am not after a fancy rebuild with forged pistons etc. Close to factory (with say a restrictor plug for the oil added to the head, and an N1 oil pump). How much would I be looking at for labour if I sourced the pistons, rings, oil pump, and restrictor myself?

Looks like you done a ringland mate, I think I may know someone that will built it at a reasonable price.

Can you R+R the engine youself?

P.M. if you are keen .

Looks like you done a ringland mate, I think I may know someone that will built it at a reasonable price.

Can you R+R the engine youself?

P.M. if you are keen .

PM sent

Yeah I can probably rip it out with my mechanics help. Its a sad sad day.

Oh well, at least I will have a more relighable engine after this big cost :)

No oil in water or vice versa. No smoke from exhaust other than when gunning it (which my mechanic did to check only!). My mechanic and his boss both think it is a valve or gasket rather than a cylinder. This is good news for me! If it is the head gasket I will put in a Tomei restrictor at the same time. He also said it could be loosing compression to the next cylinder along too. He is going to do a "wet" compression test this weekend and we will take it from there. Thanks for the advice so far people.

A friend of mine got his car rebuilt at Ricol automotive.. Located at mortdale peakhurst sorta area.. Its on norman street...

They do excellent work.. I get my stuff done by them as well..

Just thought i help.. Maybe just give them a ring and get a quote..

Edited by siddr20

Still not sure of the problem, but if I do need to rebuild I will be getting new pistons anyway. Question though. I have heard that forged pistions are better if you boost it up from factory, but I have also heard they are noisy and chew oil when the engine is cold. Is there any alternative or fix for this? Surely there is a way to have high boost but without the problems of forged pistons.

OK we did a full wet test too and it is definately a bottom end problem. The compression picks up when it is hot though. Runs very ruff when cold, but when its warm it seems fine. Oh well I guess I will start looking for rebuilt engines and/or parts. Anyone in Sydney who can help out please let me know. Also I am joining the NSW club right now. :-)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I just got to work and skimmed through 61508 and 61511. I was surprised the CSA adopted both, but neither are enforced. To recap what I read, it states that in a perfect world, they should be segregated but they acknowledge that this is not industry standard and clearly mention that they allow mixing of safety and non-safety. 61511 also mentions software segregation like AB does in their safety PLC's.   Now if only I could go back to control, let alone safety over comms. In my current line of work, we're only allowed monitoring over comms. Everything critical must still be hard wired.
    • I've unfortunately never been as they're on the complete other side of the continent and another country that isn't currently letting us in as easily as they use to. I even heard their stop signs over there actually say "Stop" instead of "Arret". If I decided to trek the 48h drive, I wouldn't know when or where to stop haha. Whenever I order parts from UP Garage, I order from Japan as it's cheaper. Same with GKTech... oddly enough, it's cheaper shipped from Australia then it is the US.  UP Garage Japan operates their US leg though, unlike Tomei. If Tomei JPN had the power to close down Tomei USA, I'm sure it would be done in a day. They're two completely separate entities. Tomei JPN messed up somewhere originally agreeing to its creation and got sacked big time. 
    • I asked someone about this and he told me about the Audi 1.8T engine. But I think it would be difficult to swap
    • I don't know that machine specifically, but I'd personally go for something with a little more kick than 130amp. Around up to 180 would be good. At the 6mm range, you're really pushing the machine hard and don't have a long period you can run for with out needing to give it a rest. Lots of MIG machines come with a regulator and hose. A lot will come with a starter roll of wire too, but it isn't too expensive to buy. I'd recommend NOT buying a massive roll too, as you don't want it sitting around FOREVER in the machine between uses and potentially going to shit. For thin sheet metal, get a roll of 0.6mm if you're doing over 3mm and above, switch over to 0.8mm wire. Even by 2mm you'd probably really want to switch. As for gas battle, it's all swap and go style now. You'll pay a bottle deposit, and then X amount to swap for a full one. I think it's like $200 or $300 for a D Size bottle upfront as "deposit", and like $110 to $150 per swap. My D size CO2/argon bottle lasts a fair bit of welding on the MIG. And I run an E size bottle on the TIG. For DIY MIG, stick with a D size bottle. If you really start to get into a LOT of welding and doing it really regularly, then upgrade. If you're like most DIY car guys, one D bottle will last you 2 or 3 years easily. I think I've been on my current bottle about 5 years. It is starting to get low, but I've been smashing it a lot more the last 6 months.
    • SR20s came with cars like the Bluebird and Primera, but the RB20 never came. The ones in Turkey were either brought in specially or from abroad. That's why RBs aren't as common as SRs. And if a part breaks or I need to replace it when doing maintenance, it's harder to find parts for RBs.
×
×
  • Create New...