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  #61 (permalink)  
Old 05-13-2010, 09:03 AM
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Quote:
Originally Posted by ap72
Well, you'll need a valve job with a new seat, and since you're doing that you may as well get new valves... cheapest "I just need it done" solution is going to be around $100. To go with larger valves and have all the seats done to match along with some bowl blending- $500.

Can he avoid putting in a new seat by moving up a valve size? Often this can save it. It costs a little more but you end up with larger valves- you gain something from your expense rather than just making it as good as it was before.
Unfortunately no the seat is already cut out. I planned on doing new valves anyways but i will probably just stick with the 1.94 x 1.5. I can do the valve job myself and also the bowl blending so i wont have to worry about cost there. So im sure they are going to clean the head up, mag it, and the just hopefully install the one seat.

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  #62 (permalink)  
Old 05-20-2010, 05:06 PM
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I attached a dyno sim of this build. To open it download it and unzip it. Then save it to desktop or wherever. Then open desktop dyno and go to open then navigate to where you saved it to. Tell me what you think. The turbo I used there is not the exact turbos im running but i got a compressor map and typed in the surge and island flow for the garret turbos used on the saabs.
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  #63 (permalink)  
Old 05-23-2010, 07:56 PM
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anyone have any input?
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  #64 (permalink)  
Old 06-07-2010, 04:42 PM
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I uploaded another dynosim if anyone can take a look at it that would be great. I got a compressor map for a Garret T25 "45trim" turbo and put in the actual specs for the turbo using the island and surge flow for 2 turbos.
This might end up being a very cheap build. Turbos are $50 a piece and i have 5 or so 305s laying around.
Heres what I get with a pr of 1.82 or about 12psi:
RPM HP TQ
2000 145 380
2500 193 405
3000 258 451
3500 316 474
4000 374 491
4500 428 499
5000 472 496
5500 496 473
6000 502 439
6500 485 392
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  #65 (permalink)  
Old 06-08-2010, 03:39 PM
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bump anyone?
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  #66 (permalink)  
Old 06-10-2010, 08:43 AM
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My input would be that those dynos are about 80% at best. The turbos will work on your engine up to 350 HP range max if that map is correct...300 is more like it. However, since it is "hand drawn" I would not trust it and would look for a garrett map.

Next, junkyard turbos are great; I have done three different junk yard turbo build. Most people on the internet today talking about turbos know very little about them, and..... Last piece of input is that most people "overturbo" an engine, so for best results match everything well.
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  #67 (permalink)  
Old 06-10-2010, 10:05 AM
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Quote:
Originally Posted by TurboS10
the turbos will work on your engine up to 350 HP range max if that map is correct...300 is more like it.
really that low? i figured 500hp was out of the question but 400-450hp would be nice.

Last edited by zildjian4life218; 06-10-2010 at 10:24 AM.
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  #68 (permalink)  
Old 06-10-2010, 11:38 AM
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Quote:
Originally Posted by zildjian4life218
really that low? i figured 500hp was out of the question but 400-450hp would be nice.
If the map that is posted is correct it shows max flow around 15lbs of air per minute. Rule of thumb is 10 hp/lb, but sometimes you can get a little more. However, I suspect that map is not correct for what you have. Do you know the factory rated HP of the engine it came on?
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  #69 (permalink)  
Old 06-10-2010, 11:40 AM
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Quote:
Originally Posted by TurboS10
If the map that is posted is correct it shows max flow around 15lbs of air per minute. Rule of thumb is 10 hp/lb, but sometimes you can get a little more. However, I suspect that map is not correct for what you have. Do you know the factory rated HP of the engine it came on?
it was discussed earlier in the thread i think right around 200hp but that was at 7psi
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  #70 (permalink)  
Old 06-10-2010, 11:57 AM
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[QUOTE=zildjian4life218]it was discussed earlier in the thread i think right around 200hp but that was at 7psi[/QUOTE

If that is correct, then you should be able to push 250 each out of them. Most manufacturors design a margin of error and try to keep the turbo in the safe range of the compressor. However, you can usually safely get more. The only way you will know for sure is to find out exactly what they are and get a compressor and turbine map for them. To discuss without those things is pure speculation.
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  #71 (permalink)  
Old 06-10-2010, 05:53 PM
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[QUOTE=TurboS10]
Quote:
Originally Posted by zildjian4life218
it was discussed earlier in the thread i think right around 200hp but that was at 7psi[/QUOTE

If that is correct, then you should be able to push 250 each out of them. Most manufacturors design a margin of error and try to keep the turbo in the safe range of the compressor. However, you can usually safely get more. The only way you will know for sure is to find out exactly what they are and get a compressor and turbine map for them. To discuss without those things is pure speculation.
This is better.
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  #72 (permalink)  
Old 06-10-2010, 08:14 PM
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That is a little more, but still shows it fully maxed out at 20lb/min. If that is true, 450 with the pair is about the best you could hope for.
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  #73 (permalink)  
Old 06-10-2010, 08:24 PM
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Quote:
Originally Posted by TurboS10
That is a little more, but still shows it fully maxed out at 20lb/min. If that is true, 450 with the pair is about the best you could hope for.
That will be fine for what I am doing. This is more of a throw it together and see if it works kinda deal. I would be more than happy with 400-450hp. I am thinking about putting this in an s10 with a 4speed m-21 and maybe like a 3.08 rear gear. Ill try to post some pics soon. I have one turbo just waiting for the yard to get another saab. Usually there are 4 or 5 there but now that I have a possible use for them they aren't in sight.
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  #74 (permalink)  
Old 06-10-2010, 08:58 PM
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Quote:
Originally Posted by zildjian4life218
That will be fine for what I am doing. This is more of a throw it together and see if it works kinda deal. I would be more than happy with 400-450hp. I am thinking about putting this in an s10 with a 4speed m-21 and maybe like a 3.08 rear gear. Ill try to post some pics soon. I have one turbo just waiting for the yard to get another saab. Usually there are 4 or 5 there but now that I have a possible use for them they aren't in sight.
PM me with a picture of what you are looking for. I have one on the shelf in my shop, but there are several variations on the little garretts.
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  #75 (permalink)  
Old 06-10-2010, 09:08 PM
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Quote:
Originally Posted by TurboS10
PM me with a picture of what you are looking for. I have one on the shelf in my shop, but there are several variations on the little garretts.
I will post the model and serial numbers tomorrow I don't have the turbo in front of me. I know its a T25 .42(cold) and .48(hot) ar and i believe its the 45 trim version not 100% sure though gotta measure it this weekend.
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