Boxman Posted June 29, 2012 Report Share Posted June 29, 2012 I'm in the process of rebuilding a B5234T block for my 855 T5, planning to make it deliver 400HP. What I've done: - Took a B5234T engine apart - All parts to engine rebuild shop - block bored and honed, head completely revised, crank checked, etc. - Built it with H-beam rods and Wiseco Forged Pistons 81.5mm Right now I'm at the point of closing the block off. The head is on there, i need to drop the cams in and attach everything else. And this is where the questions are. - Do I need N/A cams for reaching 400HP, or should I just stick with the original Turbo cams? - What kind of turbo would be recommended for 400HP? I was thinking of a Garrett, and was hoping somebody here has some experience as to which one I should take. - Also, the downpipe. I heard this has to be custom made? Will it be road legal (with a catalyst in there)? Where does one obtain these? - I heard I need injectors, bigger injectors. What kind of cc do I need? What's recommended? - Will my good old fuel pump keep up with these bigger injectors, or do I need to install a stronger pump? - Intercooler - a bigger one will be needed? Will this fit? What size should I go for? - Piping setup - I heard that the setup with the pipe over the engine block (reversed setup) was better. Where do I get such piping? Again custom made? - Gearbox-wise, I was thinking of installing a LSD in there. Also, in a gearbox rebuild, what does one usually replace? Just the synchro's? - Spark plugs - I've seen people use very fancy spark plugs. Is this necessary? Or will the stock ones suffice? Anything I've forgotten in my list? Link to comment Share on other sites More sharing options...
Zappo Posted June 29, 2012 Report Share Posted June 29, 2012 Are we talking 400 bhp or whp? There is a difference. You will probably need NA cams or aftermarket to reach 400. Garrett works. GT30 would be minimum, but if you want 400 wheel, you will need to go bigger. The DP would need to be custom made. An exhaust shop could do it, but you are better off going to a race shop to have it done. 550cc minimum, and probably want to go bigger. Stock Volvo pump won't cut it, needs to be replaced. IC can be replaced. You will be putting a lot more stress on the stock one, and it probably wouldn't like it. Also, the lower port is small. If you are replacing the IC, you might as well run custom pipes. LSD is a must unless you just care about smoking 1 tire. Stock Volvo plugs work just fine. What engine management are you using? Link to comment Share on other sites More sharing options...
Boxman Posted June 29, 2012 Author Report Share Posted June 29, 2012 Very useful info. I'm using the stock engine management afaik. I was going to get all the parts, slap it together and then get it to RICA (tuning shop) and let them tune it on the dyno. Is the original one programmable, or do I need something custom too? Also I heard that some earlier/later models use a slightly different motor management system. I'm not sure which one mine has off the top of my mind. It's a '94 (model year '95) Volvo 855 T5 without EGR or SAS.Edit; I see it has Bosch Motronic 4.3 according to wikipedia. I heard somewhere that my manual M56 transmission (and maybe the Quaife LSD) would be good up to about 400HP, so I guess then I'm looking for bhp. Also, what did volvo list the 222 HP the car came with as? BHP or WHP? Ofcourse 400WHP would be nicer, but I'm not sure if the trans would take it. Link to comment Share on other sites More sharing options...
Zappo Posted June 29, 2012 Report Share Posted June 29, 2012 All manufacturers list HP for the engine alone, and it is typically done with no accessories on the engine either; alternator, AC, etc. Stock ECU isn't going to cut it, but RICA shouldn't have a problem tuning it. Your transmission should hold the power. You might think about upgrading your clutch though. Link to comment Share on other sites More sharing options...
MattyXXL Posted June 30, 2012 Report Share Posted June 30, 2012 I hope you got the rotating assy balanced before you closed up the motor... Link to comment Share on other sites More sharing options...
Jardim Posted June 30, 2012 Report Share Posted June 30, 2012 PTE 50 trim, Garrett GT30 (expansive but worth the cash) Garret T04E, Super 20G will allow you to reach 400hp. With that said i didnt hear you mention clutch or anything. Some people are running SPEC clutches while others run custom made ones. This is something to consider because a 850r clutch might not handle 400hp for too long. Link to comment Share on other sites More sharing options...
Zappo Posted June 30, 2012 Report Share Posted June 30, 2012 I am running about 360-370 HP (330 wheel) with an R clutch. Clutch disk looks good after 1 year. I don't drag race nor dump it at 3000 RPM. Link to comment Share on other sites More sharing options...
Jardim Posted June 30, 2012 Report Share Posted June 30, 2012 hmm ill keep that in mind zappo. Link to comment Share on other sites More sharing options...
850wagonT5 Posted June 30, 2012 Report Share Posted June 30, 2012 I'm in the process of rebuilding a B5234T block for my 855 T5, planning to make it deliver 400HP. What I've done: - Took a B5234T engine apart - All parts to engine rebuild shop - block bored and honed, head completely revised, crank checked, etc. - Built it with H-beam rods and Wiseco Forged Pistons 81.5mm Right now I'm at the point of closing the block off. The head is on there, i need to drop the cams in and attach everything else. And this is where the questions are. - Do I need N/A cams for reaching 400HP, or should I just stick with the original Turbo cams? Your boost pressure can over-ride the cam selection. Though, with all the money you'll be spending on this project ($4000+), you may as well get some big boy aftermarket cams. The N/A cams are a baby upgrade. - What kind of turbo would be recommended for 400HP? I was thinking of a Garrett, and was hoping somebody here has some experience as to which one I should take. GT3071R would be a good choice, IMHO. You have several options really. - Also, the downpipe. I heard this has to be custom made? Will it be road legal (with a catalyst in there)? Where does one obtain these? Several parts on your engine after a build like this could be considered "not road legal". It depends on where you live and what the LEO's are like there. But yes, the DP will need to be fabricated to match which ever turbo you end up using. - I heard I need injectors, bigger injectors. What kind of cc do I need? What's recommended? Depends on the fuel you're using and the boost pressure...but somewhere between 400-650cc. - Will my good old fuel pump keep up with these bigger injectors, or do I need to install a stronger pump? You will want to replace the fuel pump. - Intercooler - a bigger one will be needed? Will this fit? What size should I go for? Yes. It will be custom, it won't sit in the exact same place as the OE intercooler. - Piping setup - I heard that the setup with the pipe over the engine block (reversed setup) was better. Where do I get such piping? Again custom made? Direction doesn't really matter. Yes, you will have to have pipes fabricated or make your own set to plumb the new intercooler. - Gearbox-wise, I was thinking of installing a LSD in there. Also, in a gearbox rebuild, what does one usually replace? Just the synchro's? & bearings. - Spark plugs - I've seen people use very fancy spark plugs. Is this necessary? Or will the stock ones suffice? You'll want a cooler heat range. Do some reading on the different metals used in making electrodes (copper, iridium, etc). Anything I've forgotten in my list? Good luck, sounds like quite a beast! Link to comment Share on other sites More sharing options...
Kevin. Posted June 30, 2012 Report Share Posted June 30, 2012 I'm sure that ARD Tuning will set you straight with a tune once you're at that stage Link to comment Share on other sites More sharing options...
Boxman Posted June 30, 2012 Author Report Share Posted June 30, 2012 @ MattyXXL, what do you mean balancing _before_ i close the engine? Afaik balancing happens when the flywheel/clutch and everything is attached? About flywheel/clutch (some of you mentioned this), does the T5 have the R-clutch, or are they different? As my clutch is quite stiff already. When upgrading to the R-clutch, do I only upgrade the disks, or do I need to do something wit the flywheel / pressure plate as well? @ 850wagonT5, thanks for that! What kind of cams do you recommend? Are they drop-in, or do I need to set the timing right as well? And where would I get those? Also, the fuel pump, what should I be looking for? Any brand/model that fits right in there? @Kevin, I live in the Netherlands, I'm not sure if we have ARD here. Link to comment Share on other sites More sharing options...
Boxman Posted June 30, 2012 Author Report Share Posted June 30, 2012 EDIT// Also I can't seem to find replacement synchro's/bearings for my trusty M56 gearbox. Any suggestions there? Link to comment Share on other sites More sharing options...
Kevin. Posted June 30, 2012 Report Share Posted June 30, 2012 You can still have your ECU tuned by ARD, check out their websitehttp://www.ardideas.com/tuning.html Link to comment Share on other sites More sharing options...
Boxman Posted June 30, 2012 Author Report Share Posted June 30, 2012 Well yes but for just 200 bucks more I get a custom tune specifically for my setup here at RICA. I'd think that a custom tune would give better results than a drop-in ECU. Link to comment Share on other sites More sharing options...
Zappo Posted June 30, 2012 Report Share Posted June 30, 2012 EDIT// Also I can't seem to find replacement synchro's/bearings for my trusty M56 gearbox. Any suggestions there? Volvo doesn't sell parts for the transmission. There are no rebuild options on it without using another transmission as a parts source. I am sure you can pull the bearings and have them replaced, but there isn't a part number list on them. AutoTech sells an intercooler that will go in the stock location. I have one in my car. RICA is the better option for you because it is same day and custom for your car. ARD would take time with shipping. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.