Guest Anonymous Posted September 29, 2002 Share Posted September 29, 2002 how much power will this swap make in a z and has anyone done it yet. Quote Link to comment Share on other sites More sharing options...
David K Posted September 29, 2002 Share Posted September 29, 2002 basically the power would be the same as a Q45 dont think many if any have done it due to the expense of replacing broken parts. Quote Link to comment Share on other sites More sharing options...
DavyZ Posted September 29, 2002 Share Posted September 29, 2002 I'm trying to remember how much HP my Q makes...I think it is about 245 HP or so. Sweet engines, all aluminum, would probably fit too, although you may have to relocate the steering shaft a bit. I have heard that that 300ZX 5 speed will bolt up, but that is pure hearsay. All one has to do is to compare the bolt patterns of both trannys and check the input shafts. All in all, a Chevy is cheaper, can take a tremendous amount of abuse, and can make more HP cheaply. Better bang for the buck IMO. Davy Quote Link to comment Share on other sites More sharing options...
Guest Thurem Posted September 29, 2002 Share Posted September 29, 2002 Prolly be sweet if you turbo'd it. quiet and smooth at idle with sick hp at boost. Thure Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted September 29, 2002 Share Posted September 29, 2002 there are questions to this particular swap that i'm trying to get some info on too and i've had very little luck. apparently its been done but its a tight fit then there is the problem with the chain guides in the early engine plus i'd like to know what modification to do to get at least 350 hp from that engine without turbo. folks were right it would be one sweet ride Quote Link to comment Share on other sites More sharing options...
DavyZ Posted September 29, 2002 Share Posted September 29, 2002 If the search function is working (you may have to search only one forum at a time) look up the info about a Q45 engine swap. There are links to Q45 racing (for HP) and maybe even a an engine bay pic or two of a Q45 240Z. It has been done and it works, but is it worth it? That would be my question. I can surely appreciate someone doing the swap to "keep is all Nissan" if that is the aim, but in terms of practicality and bang for the buck, the V8 Chevy swap has to be #1. Davy Quote Link to comment Share on other sites More sharing options...
Guest Ian turbo240 Posted September 29, 2002 Share Posted September 29, 2002 I have done some pretty extensive research on this swap. The problem is that the engine will not fit in the Z engine bay without relocating all of the accessories. The alternator, P/S pump, and A/C compressor are all located beneath the cylinder banks. The makes the whole assembly about 29" wide. This is too wide to fit between the frame rails of a 1st gen Z. Also, the engine is too tall (also 29") from oil pan to intake manifold top. You will need to convert to dry sump and probably install a cowl hood for clearance. However, it would be a really cool engine if someone did it. In all my research, I have not found anyone who actually has one installed in a 1st gen Z. Look at my post a few weeks ago in this forum about search engine not working. There is some more info there. Ian Quote Link to comment Share on other sites More sharing options...
fl327 Posted September 30, 2002 Share Posted September 30, 2002 the q45 motor would be good i think, trouble is, youre pretty much stuck at its stock hp and tq ratings unless you speak some really good japanese and your kanji reading ability is really good as well. ive heard of aftermarket cams, and other go fast equipment, but if youre thinking v8 and all alloy, theres plenty ls1 motors that would be around the same price and have way more hopup potential, but if youre going original, i guess thats it. i would run it with the auto, since 300zx tt trannies arent a dime a dozen, and use sds to keep things somewhat simple. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted September 30, 2002 Share Posted September 30, 2002 Well that and it looks like someone screwed up and put its intake on sideways.. Huh Davy! Just a little inside joke, I commented that very thing when Davy lifted the hood on his Q45, the runners are sort of a TPI but sideways. Regards, Lone Ps: 29" is about about 3 7/8" or so give or take wider than the frame rails, question, is that measured across the heads or at the accesory drives on the bottom, the engine compartment is a bit wider at the top than the frame rails obviously, and they did put that lexus motor in one, its a 4 cammer, its wall to wall, but did fit although no one has seen a picture outside of that one thats floating around the sites and no one can seem to tell how much work was required to stuff it in there, pretty install though. Quote Link to comment Share on other sites More sharing options...
Guest Ian turbo240 Posted October 1, 2002 Share Posted October 1, 2002 That 29" measurment is the width of the accessories when mounted on the engine. Ironicly, the widest part of the heads is also 29", and I will fit between the shock towers. It's the accessories that are the problem. Oh, yeah, and the oil pan, intake manifold, and the fact that there is no manual trans on the planet that will bolt to it without an adaptor. Ian Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted October 1, 2002 Share Posted October 1, 2002 Nuts, that kinda sucks. I suppose if a person was determined they could move accesories drives, they have to do that on like the LT1's in a Z or at least get creative with idle pulley's and removing like the A/C and stuff, but the transmission problem is a concern if a person doesn't want a automatic. Thats much wider than I would have thought. Thanks. Regards, Lone Quote Link to comment Share on other sites More sharing options...
Guest Badzx Posted October 3, 2002 Share Posted October 3, 2002 Originally posted by Ian turbo240: and the fact that there is no manual trans on the planet that will bolt to it without an adaptor. Ian[/QB] Have You tried yet? I have a vh45de in machine shop now beinng cleaned and milled for fresh rebuild and custom twin T25 or t3/t4 turbo exhaust manifold with Bov . I will be tring different Z-Tranny combination over the next couple of months. The combo will find its home in the bay of a 70 fairlady Z. Later Badzx Badzx Quote Link to comment Share on other sites More sharing options...
Guest Ian turbo240 Posted October 4, 2002 Share Posted October 4, 2002 Actually, I have tried a Z32 tranny. The bellhousing was much too small in diameter. I am assuming that the Z31 bellhousing is the same or similar to the Z32 bellhousing. As far as I can tell, the VH45DE was never offered with a manual tranny. It was only used for one vehicle, the Q45 (called the Cigma or something like that in Japan). I wish someone would come up with some more info on this subject, because I'd love to have one in my 240Z. I actually considered moving the frame rails to the outter part of the wheel wells so that the VH45DE would fit with it's accessories bolted on in the stock locations. I think that this will ultimately be the best solution. Also, I'm pretty sure that the engine will fit with the stock oil pan bolted on. It should not hit the crossmember, but it will be tight. The only other problem is the overall height of the engine with intake manifold. There are solutions to this by either using a dry sump oiling system or a custom intake manifold. Or use a really big cowl hood! Good luck and keep us posted on your progress. Ian Quote Link to comment Share on other sites More sharing options...
Guest Badzx Posted October 4, 2002 Share Posted October 4, 2002 I believe that nissan offer one(5sp) on the cima or president version of the the drive train. I wish I could read japanese. I'm not planing on stock accessories just wat need,when time comes mya custom fab new brackets.Which would be Really cool!!! thank for info Will keep informed Later Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted October 4, 2002 Share Posted October 4, 2002 glad someone is finally doing this swap pls keep alll of us posted on this one and i'll persoanlly need the specs for the brackets and all the good stuff.pls realize the importance of the project you are undertaking as no one else has done this so pls document the hell out of it. thanks Quote Link to comment Share on other sites More sharing options...
Guest Aaron Posted October 7, 2002 Share Posted October 7, 2002 From what little I have been able to look up on the subject, the 5 speed in the Cima was only available on the v6 version of that car. However, maybe we won't have to wait too long. I have heard a rumor (not sure how reliable it is) that there will be a 4.5L v8 w/6 speed in what is currently the 350Z. Don't know if it will be a Infiniti or a Nissan. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted October 7, 2002 Share Posted October 7, 2002 I have a 1991 Q45. The stock rating for the VH45DE is 278 hp and 290 lb/ft. but with an ECU (I know someone who can program the ECU for CHEAP) and cheap mods, the engine makes about 305 horses and 340 lb/ft. A friend of mine with a '90 Q, Apexi cold-air intake, Magnaflow dual exhaust ran a 14.6 @95mph and 14.3@99mph with a Z32 R230 diff swap (4.11 gear as opposed to the Q's 3.54). Keep in mind this is a 4100lb. vehicle. The VH45DE was NEVER mated to a manual transmission. Cima's (Q45's in Japan) came with the V8 or a twin turbo VQ series V6. Only the V6's came with manual trannies. The engine was also used in the Nissan President limo/sedan. Quote Link to comment Share on other sites More sharing options...
Moridin Posted November 15, 2002 Share Posted November 15, 2002 Isn't the new Skyline going to have a V8? I can imagine that it will have a 6 speed too. I have heard rumors that we may be getting the famous Skyline under the Infiniti badge (just like NSX under Acura) in America. Something to chew on. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted November 16, 2002 Share Posted November 16, 2002 Owen posted an article a long time ago covering a Q45 engine swap. The motor is very wide so custom headers had to be built likewise a new engine cradle. There was also an article about the lexus 1uZ V8 from an early 90's LS400. However, I propose something else. Why not swap in the Toyota 2UZ 4.7L V8 from a Tundra truck? You could use the heads from the 97-2001 LS400 V8 and swap out the Tundra heads. This will give this hybrid motor much-needed high-end power. Want forced-induction? The Tundra block is iron closed-deck. This would be a better candidate for a blower or turbo and the motor could be stroked & bored to 5.3L. Quote Link to comment Share on other sites More sharing options...
SpeedRacer Posted November 16, 2002 Share Posted November 16, 2002 Eric doesn't say who's project this is but he has some shots of a Q45 engine being test fitted into a 240 Z http://www.zparts.com/showcase/engines/pages/q45v8z-testfit.html Quote Link to comment Share on other sites More sharing options...
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