God_Z_illa

That's definitely true but for my purpose temperature wouldn't be an issue as I only intend to use the coil cover to prevent anything from getting into the spark plug valley/wells while the car sits or is trailered. But for anyone else's use case it would be handy as simple template to trace around and cut out of whichever material, or the 3D model it's self can serve as a base to work from to modify the design as seen fit and machine or either cast using by the printed part as sand mold.

Hey everybody, Im looking to design and 3D print an RB25 Coilpack Cover. However when I when I purchased my engine years ago the previous owner had bought a custom cover with his personalized lazer cut text for it which he wanted to keep as a memento, and I didn't mind because I planned to eventually go with 26 covers which I now own but haven't installed since the engine will be in & out several times for fab. But now I'd like to have one just to keep out any contaminants, but I'd prefer to design and print my own instead because it will never be used in the running car, and it's a good excuse just to make something. Which is why I wanted to ask if anyone could please provide me with the covers measurements? I would need the Length, Width and Depth, the diameter of the holes, and the distance between each of the holes. Once I finish designing and printing the model I'll make the files available and free to anyone who may want them. Thanks.

I have no intention to sell them. I've been going back and forth with a business that makes custom titanium hardware kits on request because I want my bolts to be anodised to a specific 50/50 colour scheme, however they've haven't yet made a kit for an RB26 before and told me I'd have to first provide them with the hardware sizing and quantities before they can give me a quote.

I'm sorry to have made you go to all that trouble, thank you again for going out of your way to help. I can't express my gratitude enough.

Thanks Duncan that's a huge help, very much appreciated. I hate to be a pain since you've already been helpful, but would happen to know anything about the timing belt cover bolts? The only thing I could find out about them was their total length (including the head), the 3 long ones are 62mm while the 2 short ones are 28mm. https://www.efisolutions.com.au/timing-cover-bolt-rb-vg-long-r31-r32-r33-r34-wc34 https://www.efisolutions.com.au/timing-cover-bolt-rb26-short-r32-r33-r34-awc34#:~:text=Size%3A 28mm long including the head.

Sorry Duncan I misworded what I said, what I meant by specs was the sizing of the bolts themselves. But your advice will come in handy when I'm at that stage.

Hey everybody, I was wondering if anyone can could please tell what the bolt specs are for RB26 Rocker Covers & Upper Timing Belt Cover as I'm looking at having custom titanium dress up bolts made, and I'm uncertain with the other posts I found online because of the conflicting answers, so I thought I'd just ask to be sure. Thanks.

Thankyou both Predator1 and Duncan for advising me and my apologies again for yet another late response, I don't mean to make a habit of it. I knew that it was probably a long shot but due to the high chances that an aftermarket crank collar wasn't fitted when the engine was built, I couldn't help hoping that a external wet sump system might be the workaround for the engagement issues that the stock collar has with conventional pumps, as well as a solution wouldn't require engine disassembly. I'm still quite the long way off from my project running and driving as the engine has to go in out a fair amount of times for test fitting and fab work which could take a good while, but once I get closer to that stage when I'm more able too, I'll cop it on the chin and get a collar fitted and a Nitto pump like originally planned.

I'd like to, but I spoke to the original owner the other day to ask him and he wasn't sure at all but said he would ask the engine builder, which is making it less likely.

Sorry for the late responses. I left that out by mistake Duncan, my bad mate. The power I want to make for now is between 600 - 650hp ish (it hasn't received a power tune post run in) and my ultimate goal I'd like to eventually achieve would be 750 - 800hp if safely possible, which is why I'd like some headroom with the pump. I have looked into dry sump kits as well but honestly speaking that wouldn't be an option within my means, unless you could recommend a cost effective way to piece one together? I also know an external wet sump system isn't a full measure compared to dry sump, but how would one stack up against other aftermarket internal oil pumps? Between the two which would you suggest, and what would be the pros and cons of each? Thanks.

Hey everyone, I'm looking for some advice with a dilemma I'm having on choosing which direction I should go with upgrading my RB25DET's oil pump. The current one is an N1 with a billet gear, and I wouldn't know whether the backing plate is factory or aftermarket as I bought the engine from the previous owner who had it built. My first reason comes down to my own fear and uncertainty created from all of the horror stories I've heard about N1 pump failures although I know half of them are due to dodgy installation, and my second reason is that I feel that the capable power figure for my current fuel and turbo setup would be right at the edge of what the N1 can safely handle as moving forward I'd like to have the headroom to aim for bigger power safety with the piece of mind. Originally I was considering going with a Nitto pump until realising that the whole engine would need to be disassembled as the crank snout would require machining to suit an upgraded crank collar to pair with the pump . Which obviously isn't a viable option as it's already a brand new built engine that had just only finished being run in for 1000km before I bought it. However I've come across a examples of RB's running external wet sump oil pump setups instead which has sparked my interest in them, such as this kit from Ross Performance https://golebysparts.au/products/nissan-rb-ross-lh-mounting-single-stage-external-oil-pump-kit-race-series-damper-306500-104?variant=15660827246701 as I've been thinking about if this alternative could be worth it rather than the expense and time that would be involved with the original idea? I'd love to hear any opinions/suggestions yous may have to offer, cheers.

Sorry for my late response, thank yous both for the advice. Looking forward to getting a start on it.

Hey everyone, I was wondering what would be the most recommended methods used to properly align the location of the hole needed when modifying an RB26 timing cover to make clearance for the RB25 VCT cam gear? It's a clear polycarbonate one from Nitto I bought naively years back as a cheap alternative to a factory 26 cover when I originally was planning to delete VCT for dual adjustable cam gears instead, but since then I've decided to retain it after doing my homework and realising how significant it's benefits are. Since the material is delicate & I want to limit as much offset as possible for the hole to be clean and centered, I'm planning to consult my local plastic supplier that offer CNC milling of custom designs. I appreciate any advice. Cheers.

Thanks everyone for the advice and clearing that up, all the options I found while searching was making me unsure about which gasket kit I'd benefit from most.

Hey everyone, I'm in the market for new rocker cover gaskets and I was wondering if anyone would recommend the GRP Engineering gasket set from Goleby's Parts https://www.golebysparts.com.au/products/rb20-rb25-rb26-tappet-cover-gasket-set-not-neo-rb25-arc3025k?_pos=37&_sid=4815c86be&_ss=r Or recommend am better alternative from your experience? Referring from the receipts of parts the past owner used in building the engine, the current gasket seem to be a generic eBay special that is in unknown condition, but based off the rubber washers that have mostly disintegrated due to either the elements or the battery that got ruptured in the crash. I'm afraid of inspecting them without having replacements on hand incase they refuse to properly seal the rocker covers afterwards. Thanks.