Joe. Posted January 5, 2007 Share Posted January 5, 2007 Right need some info on this, Have a stock N/A 2JZ in a MKiv , was looking to find out how easy and the benifits of putting a 1Jze head and complete intake onto my N/a 2jze will a 2jz exhaust manifold fit the 1jz one Also what kind of power can the 5speed w56 from a N/a take with an uprated clutch and flywheel Link to comment Share on other sites More sharing options...
bondango Posted January 5, 2007 Share Posted January 5, 2007 Joe If you owned a 1jz-gte and put the 2jz-gte bottom end on that would be a 1.5jz the 1jzgte didnt come in N/A form. The only reason most people upgrade to a 1.5jz is that its quite straight forward, there are more 2jzgte bottom ends knocking around and they are far more durable, and its quite a good combo in a mk3 or soarer. If your looking more power i'd consider an N/A-T conversion Link to comment Share on other sites More sharing options...
garethr Posted January 5, 2007 Share Posted January 5, 2007 The 1JZ-GTE didn't come in N/A form. Actually, the 1JZ came in the same versions as the 2JZ -- GE and FSE -- but nobody bothers to import cars which use the N/A versions. Link to comment Share on other sites More sharing options...
ajazyasin Posted January 5, 2007 Share Posted January 5, 2007 If your looking more power i'd consider an N/A-T conversion Id go with bondango on this one. It would be the cheapest route for power. You will get alot of headaches going the otherway, though I cant actually see the purpose. There are complete kits out there for your car to get really good power. good luck dude. Link to comment Share on other sites More sharing options...
ajazyasin Posted January 5, 2007 Share Posted January 5, 2007 And to answer the question, manifolds from the 1j don't fit the 2j and visa versa. Link to comment Share on other sites More sharing options...
garethr Posted January 5, 2007 Share Posted January 5, 2007 If 1JZ parts are a lot cheaper than 2JZ parts, then if you could put together a 1JZ head complete with all ancillaries, including a single turbo manifold and turbo, for a really good price, it might be worth it I suppose...... (if only to make changing the spark plugs easier ) It would be a fair bit of work, though. Link to comment Share on other sites More sharing options...
bondango Posted January 5, 2007 Share Posted January 5, 2007 Actually, the 1JZ came in the same versions as the 2JZ -- GE and FSE -- but nobody bothers to import cars which use the N/A versions. TBH Gareth i never knew that! ive seen the 1jz in N/A VVTi form though but that would be a different kettle for fish as far as a swap would go. Surely the main point behind the 1.5jz swap is the ability to keep the stock electronics, going with a 1jz head are you not defeating that?? i.e. will you need ECU and loom from the 1jz?? Link to comment Share on other sites More sharing options...
ajazyasin Posted January 5, 2007 Share Posted January 5, 2007 I was think that as well. You would prolly need a 1j ecu and loom. Im doing a 1.5jz at the moment and the only reason for doing it is because I already have all the bits for my head. If i had a stock 1jz I would just swap out for a 2jz complete. Link to comment Share on other sites More sharing options...
garethr Posted January 5, 2007 Share Posted January 5, 2007 TBH Gareth i never knew that! ive seen the 1jz in N/A VVTi form though but that would be a different kettle for fish as far as a swap would go. Surely the main point behind the 1.5jz swap is the ability to keep the stock electronics, going with a 1jz head are you not defeating that?? i.e. will you need ECU and loom from the 1jz?? The N/As are used in the Crown and Progres, amongst others. I'm sure I've seen somewhere (Soarer Central?) that if you're transplanting a 2JZ-GTE into a Soarer it's possible to connect the 1JZ loom to the 2JZ sensors with minimal "fiddling" (or maybe they used the 1JZ sensors on the 2JZ head), so perhaps it works the other way as well. Whether it's a good idea is another matter..... Link to comment Share on other sites More sharing options...
Joe. Posted January 5, 2007 Author Share Posted January 5, 2007 The main reason for using the 1jze head is that they are cheap and I can get a complete head with intake mani and exhaust with turbos for small money. Will use a 1.4/1.6mm head gasket and run 1.2/1.4 bar with proper suporting mods Im not going all out for power but response and touque, 450/500bhp with the same in torque at 2500/3000rpm is the target Toying with the idea of not running a Intercooler as Ive seen the HKS Rs200 drift car at the HKS a few months back and it has a 2Jz n/a with a gte inlet mani and they said the car works quite fine Link to comment Share on other sites More sharing options...
Syed Shah Posted January 5, 2007 Share Posted January 5, 2007 It is false economy. 1JZ parts are scarce and building them is bloody expensive. Link to comment Share on other sites More sharing options...
bromy Posted January 5, 2007 Share Posted January 5, 2007 I use a 2.5mm gasket on mine this has lowered the compression down to 8.5:1 and dont notice any difference in low down power off boost so dont worry about that but I would consider using a thicker one that what you have stated if you want 450-500hp, either that or new pistons which is a better option. I think you will also need a intercooler Link to comment Share on other sites More sharing options...
Joe. Posted January 5, 2007 Author Share Posted January 5, 2007 It is false economy. 1JZ parts are scarce and building them is bloody expensive. Maybe in the Uk but I know of a few Soarers over here in Ireland that are cheap and a few 1jz going around too Link to comment Share on other sites More sharing options...
bondango Posted January 5, 2007 Share Posted January 5, 2007 The main reason for using the 1jze head is that they are cheap and I can get a complete head with intake mani and exhaust with turbos for small money. Will use a 1.4/1.6mm head gasket and run 1.2/1.4 bar with proper suporting mods Im not going all out for power but response and touque, 450/500bhp with the same in torque at 2500/3000rpm is the target Toying with the idea of not running a Intercooler as Ive seen the HKS Rs200 drift car at the HKS a few months back and it has a 2Jz n/a with a gte inlet mani and they said the car works quite fine Ahh got ya now joe, from your original post i thought you were talking about slapping on a GE head from a 1jz not a GTE head. Dunno much about the HKS rs200 - i thought i ran a Turbo'd Beams TBH. You wont get very reliable useable power with out an intercooler, definately not 450-500, and i would be very sceptical about the N/A block holding that power for long unless you gonna do a rebuild 1st. Do a serach as theres been plenty of discussions regarding gearbox/clutch and engine strengths/weaknesses on N/A-T conversions based on the 2jz ge block and w58 gearbox. you can get a decent 1jz short runner intake from stryder and then look at which single (or twin setup) you would want to run with for your power levels. Link to comment Share on other sites More sharing options...
bromy Posted January 5, 2007 Share Posted January 5, 2007 i would be very sceptical about the N/A block holding that power for long unless you gonna do a rebuild 1st. you can get a decent 1jz short runner intake from stryder and then look at which single (or twin setup) you would want to run with for your power levels. Block, crank, rods same as tt only difference is lc pistons with squirters. As for the intake this does not need replacing to make good power only for convenience, Boostlogic put out 700bhp on their na-t demo car with standard 2jz na intake Link to comment Share on other sites More sharing options...
bondango Posted January 5, 2007 Share Posted January 5, 2007 Yeah Bromy my point was the rebuild regarding pistons to get compression down enough for 450-500hp. He wil be using the 1jzgte head so i just give him a few options of the intake manifolds available for it i.e. Stryders short runner manifold. Link to comment Share on other sites More sharing options...
bromy Posted January 5, 2007 Share Posted January 5, 2007 Yeah Bromy my point was the rebuild regarding pistons to get compression down enough for 450-500hp. He wil be using the 1jzgte head so i just give him a few options of the intake manifolds available for it i.e. Stryders short runner manifold. Yes the ideal and textbook way is lc forged pistons but the thicker gasket option 2-3mm has been proven for many years to work well for this conversion in the states getting good hp figures Link to comment Share on other sites More sharing options...
bromy Posted January 5, 2007 Share Posted January 5, 2007 Good to try something different though instead of the sell up and buy tt thing Link to comment Share on other sites More sharing options...
Joe. Posted January 5, 2007 Author Share Posted January 5, 2007 Im not going for all out big power figures but power thats proven to work, Im just doing all the right mods that Ive used on Sr20 before and have got good results from. The 1JZ head has been know to work very well and said to be better than the 2jz head, aiming for min 400bhp at the wheels with full power from 2500 to the redline. Link to comment Share on other sites More sharing options...
Syed Shah Posted January 5, 2007 Share Posted January 5, 2007 Maybe in the Uk but I know of a few Soarers over here in Ireland that are cheap and a few 1jz going around too Stock parts, sure. But not when you get into the realms of single turbo stuff. Also you NEED an intercooler - unless your planning on running low comp and low boost, OR on ethanol. Link to comment Share on other sites More sharing options...
Joe. Posted January 5, 2007 Author Share Posted January 5, 2007 dont worry have a couple of good turbos about that can be used IHI,Trust and a few Hks and have no problems in making them fit Link to comment Share on other sites More sharing options...
Syed Shah Posted January 5, 2007 Share Posted January 5, 2007 Manifolds for the 1JZ are hard to come by and much more £££ than 2JZ manifolds. Unless you do for the Stryder/Ebay manifold that WILL crack on you. Not as many engine management solutions etc etc. Don't get me wrong, they are great engines and it is a great single turbo platform for the HP numbers you talk about. But £££-HP, once single turbo, the 2JZ beats it hands down. Just want to make sure your fully aware of that before you start. Link to comment Share on other sites More sharing options...
Gamer Posted January 5, 2007 Share Posted January 5, 2007 Manifolds for the 1JZ are hard to come by and much more £££ than 2JZ manifolds. Unless you do for the Stryder/Ebay manifold that WILL crack on you. Not as many engine management solutions etc etc. Don't get me wrong, they are great engines and it is a great single turbo platform for the HP numbers you talk about. But £££-HP, once single turbo, the 2JZ beats it hands down. Just want to make sure your fully aware of that before you start. I completely agree and have personal experience with the above having singled a 1JZ before. Link to comment Share on other sites More sharing options...
bondango Posted January 6, 2007 Share Posted January 6, 2007 1jzgte single conversion parts are now getting big backing in the US now though. The original Stryder manifold has been redesigned now and companies like 935 and driftmotion are producing lots of 1jzgte parts - expensive, but a lot better quality than the stuff available a few years ago. Think they have just finished there standalone EM. 935 have just released a single turbo kit with the entry one coming in at £750. The best place to look for info would be supramania.com were there is a massive group of 1jzgte owners and product developers /suppliers. There are loads of Build up threads regarding 1jzgte and 1.5jz swaps aswell as a wealth of valuable info, worth checking out. Marty Link to comment Share on other sites More sharing options...
SimonR Posted January 6, 2007 Share Posted January 6, 2007 As far as I am aware, I am the only person in the UK to do the 1.5JZ so far. It isn't as straightforward as is sometimes suggested. Link to comment Share on other sites More sharing options...
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