grippy

Good to hear I'm not completely alone here. Unfortunately for me I only have one block to work with and it has light scoring on the #3 cylinder wall so a rebore is a must. I might as well take it out to 82mm and have a go at a RB22. I will get some more input before I get the block done as $$ will be coming in slowly for this one. Will you be o-ringing your block also? I have been jumping back and forth on this subject for a while now and I still cannot make a decision. I think I will have the block o-ringed as I want to pump at least 25psi through the new engine, but I have heard mixed reports on whether it is a good idea or a bad idea?? Rgds, Grippy

In defence of the pit marshall, when you are standing at the far end of the straight where car are entering from the pit, it is impossible to see the begining of the straight and therefore he cannot see what is coming out of the last turn. By the time he releases someone into (clear) track cars sneak up on the pit exit at close to 200kms. I think he was doing his best. I think that is the reason for the small tower half way down the straight, but it is impossible to manage with one person. I didn't find it to much of a hassle, just had to be on your game.

I will persevere with the RB20DET head as I have 3 of them and one is already ported. I would love to have a great combination of 20-25-26 and 30 parts to throw at this engine but the budget says no! I am still looking at the option of possibly running the 4A-GZE 82mm forged pistons to save some $$ but not sure if the big ends will fit the RB25DET crank? This will become more clear as the build progresses. I will drop the RB25 crank in before it goes away and see if there is any clearance issues with the block or girdle. Grippy..

Aircraft Engineer. Also Cert IV motor mech. Hobby, building race cars. Shire..

I already have a crank and when I buy rods I will get RB25 ones as I believe the big ends are bigger on RB25. 82mm CP's pistons will be close enough to 2.2 ltr. I have spare RB20 heads so I will run one of these. I think for the money I will get a good performance 2.2 that can run 250kw all day and be wound up every now and again without an issue. The block is ready to go off for crack testing and machining. I'll advise how the progress goes. Thanks for info.

My RB20 blows smoke when I rev it above 6000rpm and at no other time. I have no evidence of engine problem so I am suspecting my turbo is slow leaking oil. There is no evidence in the turbo of any leaks, I am still unsure of where it is coming from. The turbo is a hks item with about 5000kms on it and every time I have seen a turbo leak oil it has been in a big way and with huge plumes of smoke. The engine only has light blue smoke at high rpm. It may be my breather blowing oil back into my intake?? Will advise when I sort it. Rgds, Grippy

I am rebuilding my RB20 with forged internals and the block needs to be bored. I have a RB25 crank and I'm hoping I can bolt this into the RB20 re-bored block? Does anyone have any experience with building this type of engine combinations that can shed some light on the possibility of this working well or not? Do you know what size re-bore I will need from stock to fit oversized forged pistons? I know 20thou is available. Any idea what size the engine will end up being? Are stock RB25 rods up to the job? $$$ are very tight but I will spend on the essentials. Looking at making up to 300kw when done. Any help appreciated. Rgds, Grippy.

The faster times came later in the day, this was the third session of the day. The boy's turned it up after lunch.

My PCV is adjusted all the way out to get the car to idle. It will stall at all other settings due to the GTR injectors and Z32 afm and tune. Can the PCV give me oil ingestion problems.?? How can I check the PCV apart from removing it?? Rgds.

I took off my intake pipe into the plenum and it has oil in it. This is very hard to explain as I run a catch can that does not plumb back into the system. I have then pulled the hot pipe (compressor out) off the turbo and it is dry. I thought that my turbo may have blown the oil seal and caused a leak into the compressor but it seems not to be the case. I cannot explain why there is oil in the top intake pipe?? I also pulled the plugs and all were clean and dry and compression test returned all cylinders normal. Any suggestions are welcome. Still looking for an answer??? Rgds, Grippy

The youtube link is here. Enjoy..

I gave my stock bottom end RB20det a good workout at the track and during my last session it started blowing loads of blue smoke when I took off. At top end there was nothing. After the session the smoke was real bad when revved from idle. I drove the car home fearing the worst and once home there was no more smoke. It has had the head ported and new valve stem seals fitted just before the track day. I figure that there was oil leaking into the head through the valve stem seals when under constant high rpm and boost. I also has more and more oil coming from the breather after each session I did. Has anyone else experienced this on any of the RB engines? I'd like to know if I need to take the issue more seriously or not. Rgds, Grippy.

If anyone attended the Oran Park open practice on the 25th Sept pls post your times and photos here. There was a good showing of Nissan's at the track and some pretty respectable times were laid down. The best of the Nissans was in the 1.20's. I have some in car video that will be on youtube later today. I will post up link when ready. Rgds, Grippy. R32 Gtst.

Does it come good when you give it a gut full? Change the plugs.... Cheers..

Turbo is sold.

Turbo in top condition, I have the elbow. Not sure of series as it came off my RB20.

Update of more parts found now for sale. R32 GTSt stock radiator, $100 R32 GTSt engine crossmember, $100 R32 GTSt stock brake booster, $100 R33 GTR 444cc injectors, (6 off). $400 RB25 stock turbo, (T3 flange), came off RB20, R32GTSt. Minimal end play, well within limits. $200 RB20DET stock viscous fan, has ben trimmed to fit intercooler kit. $20 R32 GTSt air con fan. $20 R32 GTSt air con compressor, working fine when removed. $50 Aftermarket FMIC. (R32 GTSt) 550mmX300mmX80mm. $300 FET Turbo timer. $50 Hi-flow cat converter. R32 GTSt. 2 1/2" flange. $200 R32 GTSt air con compressor mount and idler pulley. $20 R32 GTSt air con condenser. $40 Aftermarket combined front/dump pipe. RB20DET. $200 Splitfire ign coil packs new in box for RB20 or RB26 only. $700

Sorry no piping with the intercooler, it came with a very poor piping setup that has now been used as a snorkel on my 4wd.

I have the stock oil/ coolant lines for the turbo.

Miranda.

R33 GTR 444cc injectors, (6 off). $400 RB25 stock turbo, (T3 flange), came off RB20, R32GTSt. Minimal end play, well within limits. $200 RB20DET stock viscous fan, has ben trimmed to fit intercooler kit. $20 R32 GTSt air con fan. $20 R32 GTSt air con compressor, working fine when removed. $50 Aftermarket FMIC. (R32 GTSt) 550mmX300mmX80mm. $300 FET Turbo timer. $50 Hi-flow cat converter. R32 GTSt. 2 1/2" flange. $200 R32 GTSt air con compressor mount and idler pulley. $20 R32 GTSt air con condenser. $40 Aftermarket combined front/dump pipe. RB20DET. $200 Splitfire ign coil packs new in box for RB20 or RB26 only. $700