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My B20A9 Turbo Project - Info&Questions

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21K views 87 replies 33 participants last post by  VTEC Inside  
#1 · (Edited)
started Oct.7 2007
I opened my engine to change the internals and I have a problem.
I hope somebody can help me with this.
So I'm building my turbo B20A9 engine and I'm gonna use crower billet rods, wiseco pistons and honda main and rod bearings. My question is can I use the same colours rod bearings if I'm not using the original rods because the colour of the bearing depends on the crank and the rod, right?
I am planning to use Turbonetics T3/T04B Super H, stage 2 .63 A/R turbo. What can I expect from this type of turbo and is it good for our engines?

DYNO GRAPH ADDED ON BOTTOM OF 3RD PAGE - 305HP, 350Nm(258ft-lbs) @19psi
 
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#2 ·
It doesn't matter what rods you use since the color on the rod bearings only depends on the crank. If yyou mersure the crank honda has tolerances for which bearings to use.
That turbo sounds good for your engine. It will need about 2700 rpm before it starts boosting but will give you lots of power all the way to 7000 rpm. A smaller T3 will start boosting at lower rpm but will not work at high rpms.
 
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#3 ·
elmotive the rod bearings depend on the crank and the rod. To see what colour you need to check a number(or letter) on the crank and on the rod. For the main bearing the numbers are on the block and the crank. So may be I'll just buy ACL and don't botter about colours :?
 
#4 · (Edited)
What do you think for Turbonetics Raptor BOVs and Turbonetics Evolution Wastegates?
And if I understood right 94-01 Integra clutch&fly combo works perfect for 90-91 Prelude right? Anybody can tell me how is the ACT Xtreme PP, Street disc and 8.8lb Fly for a daily driving?



Some pics of the progress:
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Engine out of the engine bay:
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Here is the engine ready for shipping to my basement :)
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#5 ·
Turbonetics are good products and those part also looks awsome. Can't wait to see hoow this build ends. As for the clutch I have no idea.
 
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#10 ·
Here are some pics of the dyno just before taking the engine out:

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It's measured by speed(km/h) and under are the RPMs. The torque is (Nm). I don't know how many ft-lbs is equal to 1Nm so if anybody knows would be helpful.
93,9 whp I'm not satisfied for sure! I don't know why it was so bad but I hope that when I rebuild it it'll be much better:thumbs-up:
 
#15 ·
As I already know 94-01 Integra Clutch&Flywheel combo fits with no mods in 90 Prelude. I am gonna buy Integra 94-01 Clutch&Flywheel Combo for my 90 Prelude and can you help with the choice. Which one do you think is better and why:
1. ACT Xtreme PP, Hybrid Street Disc, XACT 8,8lbs Flywheel
2. Fidanza 2.1 Clutch, Fidanza 7lbs Flywheel

I hope that I will use these on about 300whp.
 
#16 · (Edited)
I have everythng for my motor in my room and I'm very happy :)
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It's B20Luda's turbo mani, wiseco pistons 9:1, crower rods, walbro 255lph hp fuel pump, CP piston rings, honda gasket kits, ACL bearings.
And I bought the joints for 4WS so I hope I'll drive 4WS Prelude soon. The only thing I need to do is to make the shaft and to put the 4ws gear boxes on the car.

I have 2 questions:
Do the fuel pump fits with no mods because I bought it without mounting kit?
How much should be the clearance between the piston and the cylinder. Is it the same as it should be with normal piston or when the pistons are forged it sholud be more? I need this info urgent to tell the machine shop how much I want them to bore the block.
 
#19 ·
Anybody can help me with this?

I have 2 questions:
Do the Walbro fuel pump fits with no mods because I bought it without mounting kit?
How much should be the clearance between the piston and the cylinder. Is it the same as it should be with normal piston or when the pistons are forged it sholud be more? I need this info urgent to tell the machine shop how much I want them to bore the block.
 
#20 ·
Yes forged pistons definately need more clearance than stock, I think its almost double.

You should contact wiseco, or you might be able to find the information on their website.

I'm not sure on the fuel pump. I think I've read on here that the civic version drops in with no mods, hopefully someone who has done this will chime in.
 
#21 ·
Some update on my project

So I have bought some more stuff and removed the sharp edges on my wiseco pistons. Here are some pics ;) Do you like pics :)

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This one is as I bought it.

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This one is half finished because right now I don't have pics when finished but they are realy smooth. Before sanding the pistons even in the centre of the piston which looks so shiny if you touch it with your nail you could feel the edges from the knife. Now when you touch it with your nail it feels really smoooooth :)

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Here is the tranny - sandblasted and painted.

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Fidanza 100% Kevlar clutch disk

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Fidanza pressure plate

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Fidanza 7lbs aluminium flywheel

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Here is how thin is the flywheel.

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Here is one of the things that I didn't read about in the threads about putting Integra 94-01 clutch and fly in Prelude 90-91. This fly is with ballbearing and as I measured the bearing and the shaft that is on the tranny I figured that the shaft is 19mm and the the inner diameter of the ball bearing is 15mm. Which makes me think that the Integra's shaft is 15mm and Prelude's is 19mm. So if I can find ball bearing with the same outer diameter and inner 19mm would be good if not I'll make bigger hole in the fly for the bearing that I find.
Anybody had the same problem?

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Fidanza CV shafts

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ColtCams tri flow regrinds

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14" thin fan (thanks to 1funryd for the info on source)

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Innovative mounts

More to come:
-ECU from motoxxxman - one chip for NA and one for FI
-RC 550cc injectors
-Turbonetics T3/T04E 50 stg.2 .63A/R
-Turbonetics BOV and WG
-GM 3 bar MAP
-oil feed lines, sandwich plate
 
#22 ·
if you haven't found out yet...you measure the bearing clearance with the existing bearings...then gauge if you need to go to a thicker or thinner bearing from there.

looks like this is going to be a sick lude :D
 
#24 ·
Yeah I know that but I don't really like this:
"Your done with the fly now. The kit would have come with a small pilot bearing to install into the center of the flywheel, don't install it, it doesn't fit the end of the lude tranny input shaft and is useless. Your done with the fly now. The kit would have come with a small pilot bearing to install into the center of the flywheel, don't install it, it doesn't fit the end of the lude tranny input shaft and is useless. "

I noticed that teg's shaft is 15mm and the prelude's is 19mm. But I would like to put a bearing there and I'm gonna just make it like the stock fly with trust bearin(I think this is the word for this kind of bearings) not with ball bearing. I just want to have that bearing even if it's not so important. The other thing is that he said that the throw out bearing from integra doesn't fit - as I compared them they look the same but we'll see when I put it in place. I'll let you know!
 
#25 ·
I little update from last night

Last night I stayed till 3:00 am and installed the pistons with rings in, the crank, measured the bearins' clearance.

Here are some pics for you ;)

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A break to eat something

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The manual :oops:

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Tightening the crank bearings. That's me and my brother (I'm the one who is tightening) :)

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Thr rod barings left.

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Done for now.
 
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#27 ·
i just finished chipping your ecu and making both basemap chips. should be sent out later today sometime (tuesday) unless we get really busy at work. if that happens it'll be sent out first thing on weds morning. i'll pm the tracking number to you once its shipped
im off to bed though, im so shot haha, its 2:30am here. keep up the good work!
 
#28 ·
I'm glad to hear it :)
And about the good work what can I say with so many good guys like you here on PP.com only god things should happened.
 
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#30 · (Edited)
Hey man your build looks like it is really coming along. Just a little heads up on the Fidanza Kevlar clutch though, I bought one for my H22 swap and managed to completely destroy it in one evening at the track. It held up fine to my street tires but the slicks did it in after two passes. I think with the power your going to make you might want to look into another clutch disk. As well the Kevlar clutch seem to slip a little bit up top between shifts. I would barely be able to chirp second and never third. My new ACT ceramic 6 puck is awesome it will light the tires up in third.

The flywheel as well gave me some problems and in the end I switched it out too. The starter ring gear is a separate piece that is pressed on and the held in place by like 8 or 10 little screws. The ring gear separated from the flywheel when the little screws sheared off. Maybe have a look at those and make sure they’re tight if you are going to use it.

I’d hate to see you have to pull everything out right after you get it together. I have some pictures kicking around, I will try and find them. Good luck!
 
#39 ·
turbonetics1 said:
Did you do the block notching for your rods? thoses are carillo rods right?
Click to expand...
Why do you think that I need half radiator? I'll be using stock radiator. I just bought a new one.

And the rods are Crower but I don't know what does block notching mean. I already drive with the forged internals ;)
 
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