T5Hammy Posted August 10, 2011 Report Share Posted August 10, 2011 So I think I want start buying the parts to do a build with an HX35, it's gonna be along time before I have everything to build an engine and turbo setup but I need to start compiling info. Basically I've done some searching for volvo's using holset turbos and it seems like mostly swedes doing it, I know common consensus is the hx40 isn't gonna spool until after 5000rpm. I think with a built LPT engine bored .040 over I might be able to get the hx35 spooling by 3500-4000 if I use the bullseye performance hot side the dsm guys use. I figure if a 2.0-2.4 dsm engine can spool it by 3500 hopefully we can also. If properly tuned will the higher compression of the LPT motors be an issue (thinking with VEMS I should be able to keep everything intact) or would it be better to use the HPT block. Other than compression is there other major differences to address? Is there a better engine for this, maybe a 2.5? So I know I saw a theard with dyno sheets with a holset (hx40 i think and it may have been a t6) on a Volvo not too long ago but I can't find it, does anyone remember the name of it/ what engine and turbo it was. Next does anyone have experience with the holset on a Volvo or know a good place to look for info on the builds some of the swedes are doing with them. I've found a few YouTube bids but some don't even have visible boost gauges too see how they spool, and most are just showing off speed. Basically I'm looking for the best way to run one of these turbos and find real world experience on how the spool will come in on a Volvo, supposedly the holsets spool faster and build more power than the similar sized garretts so it seems like a better option to me. Also to me it seems like we need to experiment with new things on our cars to see what they can do so I'm looking for something most are not doing. So I have found one good build by a swede at this site: http://www.garaget.org/?car=10014 google translate does a pretty good job, seems a feasible setup, I think all the parts should be available stateside. Well any info is great and opinions are welcome (besides I'd get opinions even if I didn't ask haha) Link to comment Share on other sites More sharing options...
BlackT5 Posted August 10, 2011 Report Share Posted August 10, 2011 There are a lot of factors that come into play that will determine when a turbo will achieve target boost pressure. CR, manifolds, turbine size, cams, headwork, the list goes on. Why are you set on using a Holset? Price? something different? What is your hp goal? Link to comment Share on other sites More sharing options...
T5Hammy Posted August 10, 2011 Author Report Share Posted August 10, 2011 Mostly for something different, as for cams I'll run the na intake cam for sure probably an r mani that's ported. I realize there are so many factors thats why I'm trying to get as much Volvo specific info and I'm sure a lot will be trail and error will come into play. Also I'm gonna try to find a 7 blade hx35 from a 99-02 manal cmmins since common consensus is the spool qicker and can push almos 60 lbs/min (similar to a 60-1). If I can find one in a jy and get a good thread on how to use them it could end up being a budget turbo for people who want the 35r or 60-1 I really think it's time for us t5 guys to show we can be as creative as the ricer crowd and find more options for turbos. We have a good platform and with some innovation and more aftermarket we should be able to see more 400-500+ hp cars. We need to learn to build these like the swedes do they are awesome cars with much potential. Hp wise I'd like somewhere inthe 400-500 range with an unusual setup but who knows Link to comment Share on other sites More sharing options...
fischmama Posted August 10, 2011 Report Share Posted August 10, 2011 Mostly for something different, as for cams I'll run the na intake cam for sure probably an r mani that's ported. I realize there are so many factors thats why I'm trying to get as much Volvo specific info and I'm sure a lot will be trail and error will come into play. Also I'm gonna try to find a 7 blade hx35 from a 99-02 manal cmmins since common consensus is the spool qicker and can push almos 60 lbs/min (similar to a 60-1). If I can find one in a jy and get a good thread on how to use them it could end up being a budget turbo for people who want the 35r or 60-1 I really think it's time for us t5 guys to show we can be as creative as the ricer crowd and find more options for turbos. We have a good platform and with some innovation and more aftermarket we should be able to see more 400-500+ hp cars. We need to learn to build these like the swedes do they are awesome cars with much potential. Hp wise I'd like somewhere inthe 400-500 range with an unusual setup but who knows I have an HY35 that I bought and it does not fit back there with an R manifold as far as I remember. I too was looking at the HX35 but fitment is something I don't want to deal with right now. Link to comment Share on other sites More sharing options...
Volvo5.0 Posted August 11, 2011 Report Share Posted August 11, 2011 If properly tuned will the higher compression of the LPT motors be an issue (thinking with VEMS I should be able to keep everything intact) or would it be better to use the HPT block. Other than compression is there other major differences to address? Is there a better engine for this, maybe a 2.5? Some have said that the cylinder walls of the LPT 2.4 motor are to thin and will crack at the HP levels you're looking for. Don't know how much truth there is to that though. I used the LPT block on my build (HPT pistons though), but my HP goals are modest compared to yours :D Link to comment Share on other sites More sharing options...
Jardim Posted August 11, 2011 Report Share Posted August 11, 2011 I met a guy with a holset powered 240 SX and that thing provided good linear boost throughout the RPMs on his tune. Being a 2.4 liter like his, your car could be very very fast with that turbo. You might need a custom exh. manifold due to clearance problems like fischmama said. And if your going to use the 2.4 LPT make sure you swap out the pistons to a lower C/R.At the HP goal you want, the LPT C/R is a no-no. The highest i would go into modding a stock LPT is 14 psi on a 16t with a good tune, which IMO is pushing safe. Link to comment Share on other sites More sharing options...
98t5M Posted August 11, 2011 Report Share Posted August 11, 2011 If you're boring the block, changing the compression ratio shouldn't be a big deal. But from what I've read, these engine's cylinder walls are somewhat likely to crack when making big power(especially lpt's). Boring is only going to further this problem. I imagine if you're putting this much time/effort/$$$ into it sleeving the cylinders would be do-able. Link to comment Share on other sites More sharing options...
Jardim Posted August 11, 2011 Report Share Posted August 11, 2011 you could probably just stroke it, fit a newer 2.5 cam or something......*crank slightly drunk. Link to comment Share on other sites More sharing options...
fattmatt805 Posted August 11, 2011 Report Share Posted August 11, 2011 LOTS of guys on TB running holsets. hx35, hy35 he351 etc etc on 2.3L 8v 4 bangers. spool shouldnt be an isue, space i assume would be your biggest concern Link to comment Share on other sites More sharing options...
AverageVolvo Posted August 11, 2011 Report Share Posted August 11, 2011 Talk to Lucky(ArdIdeas.com) and Ard Lucky here on VS. Also Find a compressor map for the desired turbo. Link to comment Share on other sites More sharing options...
T5Hammy Posted August 11, 2011 Author Report Share Posted August 11, 2011 I have an HY35 that I bought and it does not fit back there with an R manifold as far as I remember. I too was looking at the HX35 but fitment is something I don't want to deal with right now. Ya, I was wondering about that, do you remember where it was hitting? Some have said that the cylinder walls of the LPT 2.4 motor are to thin and will crack at the HP levels you're looking for. Don't know how much truth there is to that though. I used the LPT block on my build (HPT pistons though), but my HP goals are modest compared to yours I've seen people say they are and heard people say its not an issue but I guess on a build like this it me be best not to risk it. you could probably just stroke it, fit a newer 2.5 cam or something...... *crank slightly drunk. That is something I may have to look into but and engine that would wind higher is probably better for a big turbo. Talk to Lucky(ArdIdeas.com) and Ard Lucky here on VS. Also Find a compressor map for the desired turbo. I guess he probably would be the guy to talk to but with everything he's got going on trying to get everything up and running I figured I'd wait for things to settle down before asking questions about a build I don't even have the parts for yet haha. Link to comment Share on other sites More sharing options...
Alan M Posted August 11, 2011 Report Share Posted August 11, 2011 The issue at the rear of the older (850/70) platform engine bay is room. The major stumbling block is the rear engine mount. The mount is in the way and the only way round it if you want to use the log manifold is to alter the rear mount. I had my K27 in the bay with a 10degree taper on top of the normal angle on the log manifold and used a redesigned solid type one piece rear engine mount. Its easy enough to do if you do want to go down the larger turbo route. My turbo was considerably larger than a GT3071r and the room was very tight though possible. My car was immensely powerful compared to all the Volvo specific turbo's. I managed 337HP and 368lb of torque with the K24 on a standard 4.3 motronic head but when I changed to a B5244T5 2005 head I used the K27 and produced much more power but I never dyno'd it. The larger the turbo the much higher increase in lag. My turbo never made positive boost really till around 3400rpm and 20psi by around 4800rpm. I was intending to map for much higher pressure but me emmigrating has made me strip the car for spares. I will probably start all over again in a new country and will definately be using a large frame unit again as they are easy to come by for certain turbos with parts readilly available. Link to comment Share on other sites More sharing options...
fischmama Posted August 11, 2011 Report Share Posted August 11, 2011 Ya, I was wondering about that, do you remember where it was hitting? Rear trans/engine mount is the culprit. Even my 60trim hit and I had to make some changes to fit it. Link to comment Share on other sites More sharing options...
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