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Topic Review (Newest First)
04-04-2013 02:04 AM
Project89
Quote:
Originally Posted by bygddy View Post
Its hilarious actually, I spend an obnoxious amount of time on turboforums and this stuff has gotten so simple its embarrassing....not sure if u have read the grenade thread over there, but its epic. I spent $150 on this Turbo, eBay cooler is $200, charge piping etc, maybe $100. Was looking at eBay Turbo headers but the way the cross over runs I may just make my own pass side with a merge from the drivers side and go from there. I am more the willing to see how long the bottom end hold up with decent forged slugs and really good flowing heads on 15# of boost lol. A wideband, a modded 750dp. And the biggest expense will be an MSD 6AL2 box. I know from digging through some past posts on here that not everyone agrees, but making 600+whp with 8.5comp, real good heads, and 15psi or less is not rocket science. Making it live, and the parts behind it live may be a different story lol, but I will fix and upgrade as its needed.

my twin turbo iroc was built after the grenade thread , all stock stuff pushing 23 psi of boost with an added nitrous shot ontop of it never an issue, infact ill be re regeristing that car end of this week now that the weather i s getting nicer , and ill drive it with that engine in it till i finish the sb 427

i also just ordered one of the ebay gt45's for my silverado 2500 those turbos even if u have to pay the full price of 300 bucks a unit are outstanding turbochargers and have been proven to be dead reliable


dont matter what u put the turbo on wether its a stock engine or a fully built engine, tune it right and the thing will last forever
04-02-2013 05:59 PM
bygddy
Quote:
Originally Posted by spinn View Post
Isnt it nice to be able to get the basic components for a turbo kit at a affordable price. I waited a long time for that. $4-5k on a kit is not reasonable to me.

$4-500 and your talking. Most people spend that on coated headers.

The little *bay t34 can be mounted on civic, integra, neon, cobalt, focus, Saturn, sunfire, etc.

A twin cam Saturn sl from 2000, can become a self destructing terror. Who would have thought the Saturn sl could become fast as the old factory corvettes. The fact that you only have to spend $500 to get there is a slap in the face. Then to be able to turn the power down for longevity is a bonus.

People said that the 90's mustangs were fast stock. I think they ran 15 seconds in the quarter and made 180 rwhp. A Saturn twin cam with these kits cam make over 200fwhp.

This is the hotrodding of today. It has to be. There is nothing but these crappy 4 cylinders everywhere I turn. If you can turn a wrench , now you can do something with them.

Im not sure about the legalities or ethics of it . Somebody else would know better
Its hilarious actually, I spend an obnoxious amount of time on turboforums and this stuff has gotten so simple its embarrassing....not sure if u have read the grenade thread over there, but its epic. I spent $150 on this Turbo, eBay cooler is $200, charge piping etc, maybe $100. Was looking at eBay Turbo headers but the way the cross over runs I may just make my own pass side with a merge from the drivers side and go from there. I am more the willing to see how long the bottom end hold up with decent forged slugs and really good flowing heads on 15# of boost lol. A wideband, a modded 750dp. And the biggest expense will be an MSD 6AL2 box. I know from digging through some past posts on here that not everyone agrees, but making 600+whp with 8.5comp, real good heads, and 15psi or less is not rocket science. Making it live, and the parts behind it live may be a different story lol, but I will fix and upgrade as its needed.
04-02-2013 10:25 AM
spinn Isnt it nice to be able to get the basic components for a turbo kit at a affordable price. I waited a long time for that. $4-5k on a kit is not reasonable to me.

$4-500 and your talking. Most people spend that on coated headers.

The little *bay t34 can be mounted on civic, integra, neon, cobalt, focus, Saturn, sunfire, etc.

A twin cam Saturn sl from 2000, can become a self destructing terror. Who would have thought the Saturn sl could become fast as the old factory corvettes. The fact that you only have to spend $500 to get there is a slap in the face. Then to be able to turn the power down for longevity is a bonus.

People said that the 90's mustangs were fast stock. I think they ran 15 seconds in the quarter and made 180 rwhp. A Saturn twin cam with these kits cam make over 200fwhp.

This is the hotrodding of today. It has to be. There is nothing but these crappy 4 cylinders everywhere I turn. If you can turn a wrench , now you can do something with them.

Im not sure about the legalities or ethics of it . Somebody else would know better
04-01-2013 07:44 PM
bygddy Just because, eBay Gt45, eBay Turbo manifolds, eBay intercooler, walbro 255 inline, aeromotive reg, will mod my current 750 for boost following hanger18 instructions, and see what happens.
Was going to keep my mouth shut cause I'm known to change directions, or cars lol. But this is way to cool not to do....
04-01-2013 07:35 PM
bygddy
Quote:
Originally Posted by oldbogie View Post
The plain 268H is not a bunch different from the XE it picks up 6 degrees of ramp coming from the .006 to .050 lift section. A bit less lift on both sides, a lot less exhaust duration, intake open and close events are almost idential, while the Lobe seperation of the 268H is a bit tighter that the XE. This cam will still respect 1.6 rockers with your head selection. You might want to consider a 1-3/4 to 1-7/8s primary tube header to insure the exhaust side doesn't limit the output as the lack of additional lift and/or duration could otherwise hamper the top end power. Back cutting the valves 20-30 degrees especially on the exhausts will help crutch this cam. Ops, I forgot your environmental limits. I'd stick with my peak dyno power at the crankshaft guestimate, but pull it down 30-45 hp installed rather than 20-30. Still darn respectable around 405 to 420 hp at the crank installed.

Bogie
I could happily live with 420hp from such a simple combo....especially if it makes the torque I hope it does.
Besides....its got a 6 month shelf life before it comes back out and get some forged dished pistons in the fall. Then I get to see how "built" my 700r4 is lol.....
15#'s and 500-600whp should be fun to try
Oh....I picked up one of these last week because someone needed their dishwasher fixed lol.
04-01-2013 06:01 PM
oldbogie
Quote:
Originally Posted by bygddy View Post
Its not an XE, just a 268H, 218/218, 469/469
As for exhaust, I do know I'm giving up something but not sure how much, the drivers side crossover meets the pass side fairy far under, and the pass is long, the merge is under the pass floor area, no cats, and they meet into a dual 2.5 to single 3" merge then 3" to the rear.
The plain 268H is not a bunch different from the XE it picks up 6 degrees of ramp coming from the .006 to .050 lift section. A bit less lift on both sides, a lot less exhaust duration, intake open and close events are almost idential, while the Lobe seperation of the 268H is a bit tighter that the XE. This cam will still respect 1.6 rockers with your head selection. You might want to consider a 1-3/4 to 1-7/8s primary tube header to insure the exhaust side doesn't limit the output as the lack of additional lift and/or duration could otherwise hamper the top end power. Back cutting the valves 20-30 degrees especially on the exhausts will help crutch this cam. Ops, I forgot your environmental limits. I'd stick with my peak dyno power at the crankshaft guestimate, but pull it down 30-45 hp installed rather than 20-30. Still darn respectable around 405 to 420 hp at the crank installed.

Bogie
04-01-2013 05:45 PM
bygddy I did pick up a brand new performer rpm for 100$ on my way home from work today! I had a used one, but couldn't turn this down lol. Dug out my roller rockers, seems I'm missing the poly locks, and 3 rockers, oops....so ordered new comp ones today, stayed with 1.5 tho, and a pushrod checker. Then called Dave at pro-filer and kinda got a tad pissy, its only been like 9 friggen weeks or something, he assures me they will go out this week. Better be worth it.
04-01-2013 05:34 PM
bygddy
Quote:
Originally Posted by oldbogie View Post
With 1.6 rockers and long tube headers off the top of my head I've give this about 450 horses around 6000 RPM. The short tube headers are going to hurt peak power by maybe 20-30 as the XE268H has a fair amount of overlap which likes and can take advantage of the pulse tuning present in long tubes.
You might be able to make that up in part with long 3 inch collectors instead of 2.5. But if the vehicle is low and the roads rough, you just have a problem that isn't easy to overcome without going to lake pipes outboard of and at the rocker panel's level.

The XE268H likes 1.6 rockers, these fast, short ramp cams react better to 1.6 rockers than do older muscle car design cams where a lot of ramp tends to be used which takes a more RPM and compression to overcome effects from the late and slow closing intake. Since today's unleaded fuels just don't allow ratios much beyond 9.5 for iron heads and 10.5 for aluminum running a faster acting cam to reduce the costs on compression of a late closing intake is a good solution. The back side in your case is going to be fast opening on the lift side which will want to emphasize wave tuning on overlap will not be effective with your exhaust.

But all in all this is a good engine layout and sure to push an engine dyno into the lower to mid 400 horse area.

Bogie
Its not an XE, just a 268H, 218/218, 469/469
As for exhaust, I do know I'm giving up something but not sure how much, the drivers side crossover meets the pass side fairy far under, and the pass is long, the merge is under the pass floor area, no cats, and they meet into a dual 2.5 to single 3" merge then 3" to the rear.
04-01-2013 04:19 PM
oldbogie
Quote:
Originally Posted by bygddy View Post
So my heads should be here late next week, and i know et is all that matters, but would really appreciate some input, guesses on HP just so I can get an idea what to expect.?
So here's what it is.
355 SBC
0 decked, 4vr flat tops. 6cc dish
64 CC Profiler 195 heads.
.200/156.2
300/216.6
400/262.8
500/277.3
600/282.5
700/284.7
800/285.2
Comp 268h
218/218
484/484 lift using comp 1.6,roller rocker
10.3 compression
Rpm intake
750dp
1" 4 hole Carb spacer
Hei dist
Mid length headers to 2.5y pipe, to single mandrel 3" to the back to single bullet muffler
Yes I know long tubes are better, car is low, and roads suck here, and not going down that route again. So these will stay.
So that's what it is. Opinions? Thoughts?
Good or bad.
thanks
Dave
With 1.6 rockers and long tube headers off the top of my head I've give this about 450 horses around 6000 RPM. The short tube headers are going to hurt peak power by maybe 20-30 as the XE268H has a fair amount of overlap which likes and can take advantage of the pulse tuning present in long tubes.
You might be able to make that up in part with long 3 inch collectors instead of 2.5. But if the vehicle is low and the roads rough, you just have a problem that isn't easy to overcome without going to lake pipes outboard of and at the rocker panel's level.

The XE268H likes 1.6 rockers, these fast, short ramp cams react better to 1.6 rockers than do older muscle car design cams where a lot of ramp tends to be used which takes a more RPM and compression to overcome effects from the late and slow closing intake. Since today's unleaded fuels just don't allow ratios much beyond 9.5 for iron heads and 10.5 for aluminum running a faster acting cam to reduce the costs on compression of a late closing intake is a good solution. The back side in your case is going to be fast opening on the lift side which will want to emphasize wave tuning on overlap will not be effective with your exhaust.

But all in all this is a good engine layout and sure to push an engine dyno into the lower to mid 400 horse area.

Bogie
04-01-2013 04:14 PM
BigMo I had a set of ported Canfields on it.......its be awhile, i think they were 200 intakes.....pulled hard up to around 6600 then the cam fell on its face.....
04-01-2013 02:55 PM
bygddy
Quote:
Originally Posted by BigMo View Post
yeah thats about right, i went with the assumption that is wasnt decked cuz you didnt say, so i added .020 back in.....thats why i was saying a .059 quench......i had a motor almost identical and it made 415 @ 6400.....i had better heads though
Better heads? What were you using?
04-01-2013 02:43 PM
BigMo ****, i guess i dont read very well, i see you said zero deck now....sorry
04-01-2013 02:42 PM
BigMo yeah thats about right, i went with the assumption that is wasnt decked cuz you didnt say, so i added .020 back in.....thats why i was saying a .059 quench......i had a motor almost identical and it made 415 @ 6400.....i had better heads though
04-01-2013 01:40 PM
bygddy
Quote:
Originally Posted by BigMo View Post
i get more in the 9.8cr range, guessing at a .020 deck and 62 degree closing on the cam (guess only) w a 7.02 dynamic......so yeah, pump gas works (91-93 octane).....however....if you havent decked it, then that .059 quench is not very good....may have to take some timing out of it
Yes, its been zero decked actually, I get 10.2 comp, with .041 quench.
04-01-2013 07:16 AM
BigMo i get more in the 9.8cr range, guessing at a .020 deck and 62 degree closing on the cam (guess only) w a 7.02 dynamic......so yeah, pump gas works (91-93 octane).....however....if you havent decked it, then that .059 quench is not very good....may have to take some timing out of it
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