Jump to content
SAU Community

Recommended Posts

Hi everyone,

What are peoples thoughts on using shot peened standard rods or forged rods with forgged pistons if i want to run 1.5bar reliably?? I don’t really have the cash to go for the fogged rods, but I can afford to get my rods shot peened.

I will be getting the crank machined, engine blueprinted and and rebuilt with 87mm Arias Fogged pistons, shot peened rods, ARP rod bolts and new bearings along with sum baffles and new gaskets etc. I have Group A turbos, intercooler and bigger injectors. Apparently before i got the car it had dynoed over 300kw at the wheels, so i would like to achieve this aith the new setup.

History:

I just bought a R32 GTR 2 weeks ago and on my first night out piston 4 had a piece of metal come from somewhere (ring/detonation???) and F$#^*$ked my head!! So i have owned it for 2 weeks and the car has been in the garage for most of the time. :_(

It had been rebuilt 13,000kms ago by Unique MS in Sydney and i was aware that there had been some damage to the cylinder that failed cylinder as the compression was down to 90psi.

Cheers,

Francisco

Link to comment
https://www.sau.com.au/forums/topic/57481-r32-gtr-rebuild/
Share on other sites

Hi everyone,

What are peoples thoughts on using shot peened standard rods or forged rods with forgged pistons if i want to run 1.5bar reliably??  I don’t really have the cash to go for the fogged rods, but I can afford to get my rods shot peened.

I will be getting the crank machined, engine blueprinted and and rebuilt with 87mm Arias Fogged pistons, shot peened rods, ARP rod bolts and new bearings along with sum baffles and new gaskets etc.  I have Group A turbos, intercooler and bigger injectors.  Apparently before i got the car it had dynoed over 300kw at the wheels, so i would like to achieve this aith the new setup.

Im running basically the same setup. Upgraded bearings, standard rods shot peened with ARP rod bolts, Arias forged pistons, metal head gasket, o-ringed, balanced and blue printed. Used to run 1.5 bar on HKS GT2530's with standard camshafts, and now 1.25bar with Tomei poncams. Has been running for 15,000kms with no hiccups whats so ever (well at least in relation to the engine build).

I was told with the standard rods, keep to the factory rev limit and you wont have a problem 350awkw and under. We had part of my engine apart a few weeks ago and everything still looks as new.

EDIT: I as wactually told more than 350kw for the shot peened rods at factory rev limit, but 350kw is ample for what I want from the car.

Link to comment
https://www.sau.com.au/forums/topic/57481-r32-gtr-rebuild/#findComment-1108488
Share on other sites

What are peoples thoughts on using shot peened standard rods or forged rods with forgged pistons if i want to run 1.5bar reliably?? I don’t really have the cash to go for the fogged rods, but I can afford to get my rods shot peened.

I will be getting the crank machined, engine blueprinted and and rebuilt with 87mm Arias Fogged pistons, shot peened rods, ARP rod bolts and new bearings along with sum baffles and new gaskets etc. I have Group A turbos, intercooler and bigger injectors. Apparently before i got the car it had dynoed over 300kw at the wheels, so i would like to achieve this aith the new setup.

History:

I just bought a R32 GTR 2 weeks ago and on my first night out piston 4 had a piece of metal come from somewhere (ring/detonation???) and F$#^*$ked my head!! So i have owned it for 2 weeks and the car has been in the garage for most of the time. :_(

It had been rebuilt 13,000kms ago by Unique MS in Sydney and i was aware that there had been some damage to the cylinder that failed cylinder as the compression was down to 90psi.

sounds like you bought doge GTR,do you mind i ask you how much you pay for the car?couse i just want to know,if you pay right price for GTR,you should get very good example GTR,they are very strong engine,

i think you should bring the car back to the guy who sold the car to you,

good luck mate,

Link to comment
https://www.sau.com.au/forums/topic/57481-r32-gtr-rebuild/#findComment-1109442
Share on other sites

yeah i did get ripped a little, but apart from the engine the car is super clean and has nice mags & good suspension. I thought i was getting a good deal for a R32 93 Vspec with the Brembo's etc but with the rebuild it will work out to be a little over market value. Thats the risk you take i guess.

Thanks for the comments above - i really want h beams but i cant afford them with the whole build, so i think i will have to settle for shot peened.

I will be getting a light port & polish, but once again i can afford to get cams at the moment.

Link to comment
https://www.sau.com.au/forums/topic/57481-r32-gtr-rebuild/#findComment-1109561
Share on other sites

Trust the above few posts - once you've got the power bug, it bites hard. Especially so in an R as it get the power to the ground so well.

A year or so down the track when you're strapping on those high mount(s) you'll always have the thoughts of those std rods in the back of your mind. While your at it, check to make sure that the crankshaft/oil pump setup is of the later type.

Link to comment
https://www.sau.com.au/forums/topic/57481-r32-gtr-rebuild/#findComment-1110199
Share on other sites

do the rods and dont be p!ssed off about the buy, after the rebuild the engine will be bullet proof and the car will be proper market value for a 93 V SPEC!!! atleast this way you will know the capabilities of the engine, so consider the rods and the rebuild as cheap insurance for the engine/car and peace of mind.

dreamer

Link to comment
https://www.sau.com.au/forums/topic/57481-r32-gtr-rebuild/#findComment-1110418
Share on other sites

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

    • @Murray_Calavera  If I were an expert I wouldn't be in here looking for assistance.  I am extremely computer literate, have above average understanding on how things should be working and how they should tie together.  If I need to go to a professional tuner so be it, but I'd much rather learn and do things myself even if it means looking for some guidance along the way and blowing up a few engines. @GTSBoy  I was hoping it would be as simple as a large vacuum leak somewhere but I'm unable to find anything, all lines seem to be well capped or going where they need to be, and when removed there is vacuum felt on the tube.  It would be odd for the Haltech built in MAP to be faulty, the GTT tune I imported had it enabled from the start, I incorrectly assumed it was reading a signal from the stock MAP, but that doesn't exist.  After running a vacuum hose to the ECU the signal doesn't change more than 0.2 in either direction.   I'll probably upload a video of my settings tomorrow, as it stands I'm able to daily drive, but getting stuttering when giving it gas from idle, so pulling away from lights is a slow process of revving it up and feathering the clutch until its moving, then it will accelerate fine.  It sounds like I need to get to the bottom of the manifold pressure issue, but the ignition timing section is most intimidating to me and will probably let a pro do that part.  Tomorrow I'll try a different vacuum line to T off of, with any luck I selected one that was already bypassed during the DBW swap. @feartherb26  I do have +T in the works but wanted to wait until Spring to start with that swap since this is my good winter AWD vehicle.  When removing the butterfly, did it leave a bunch of holes in the manifold that you needed to plug?  I thought about removing it but assumed it would be a mess.   I notice no difference when capping the vacuum line to it or letting it do its thing.  This whole thing has convinced me to just get a forward facing manifold when the time comes though.
    • Update: tested my spark plugs that are supposed to be 5ohms with a 10% deviation and one gave me a 0 ohms reading and the rest were 3.9ohm<, so one bad and the others on their way out.
    • 9" wheels are a little too wide for a RWD 32. They can fit. People have put R33 GTR wheels on 32s for years and years. But they are a very tight squeeze. This has been known for about 30 years. As I said - there is no difference between a 17 and an 18 in terms of what will fit. The rolling diameter needs to stay about the same as stock - not very much larger. If you increase that, you will start to have problems. If you increae rolling diamater at the same time as yo increase width, you will have problems earlier. as 9" wheels are pushing the boundaries already, you would need to be careful with tyre choice. I would put 8.5s on the front of mine, but would expect problems with 9s.
    • post up screen shots of your injector tables
    • Diagnostic flow for a code 21 says check signal at the ECU pins, on a voltmeter of some kind it should read 0.1V at idle, 0.12V cranking, 0.15-0.25V at 2000 rpm. Check each coil such that +1, -3 is infinite or very high resistance, -3, +2 should do the same. (-1, +3), (+3, -2), (+1, -2), and (-1, +2) should all be somewhere between 0 ohms and high resistance. If you trace the path from the coil pin all the way back to the ECU in the diagram the resistance you measure at the coil vs connected to the harness should be pretty much the same. 
×
×
  • Create New...