Is a 7.4.1 comp to low to run a T34.63?
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#12
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Originally Posted by peteh
for the engine spec.
The engine spec would better suit a T4 turbo than a standard engine would suit a T4, but that doesnt mean bolting a T4 onto it will give you something pleasant to drive, it all depends on what you are after, and unless its 500bhp or so, i cant see why you would want to fit a big laggy T4
I would worry most about ending up with an engine and turbo that suits your driving.
#15
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Originally Posted by peteh
I don't want 500bhp far from it
, wana fast street /quater mile car
punchy and responsive most of all, not into top speeds and that.
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punchy and responsive most of all, not into top speeds and that.
Then IMHO its not a suitable compression ratio and i would wager the ports in the head are too big as well.
You would be better off for what you want just swapping it for a standard engine!
#17
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Originally Posted by chip-3door
Originally Posted by peteh
I don't want 500bhp far from it
, wana fast street /quater mile car
punchy and responsive most of all, not into top speeds and that.
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Banana](https://passionford.com/forum/images/smilies/banana_dance.gif)
punchy and responsive most of all, not into top speeds and that.
Then IMHO its not a suitable compression ratio and i would wager the ports in the head are too big as well.
You would be better off for what you want just swapping it for a standard engine!
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#18
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...oh and before anyone spouts more "in theorys"
i have had most comp ratio and turbos
..and the current one just so happens to be the spec your after Pete....feels a lovely combo to me bizarrely
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#19
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Chip i talk from experience not books
..plus i never said it would be as good as std comp as that never arose in the conversation..he was asking if it would be ok...and IMO yes it will as i have experience..
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..plus i never said it would be as good as std comp as that never arose in the conversation..he was asking if it would be ok...and IMO yes it will as i have experience..
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Originally Posted by Bosch-Man
...oh and before anyone spouts more "in theorys"
i have had most comp ratio and turbos
..and the current one just so happens to be the spec your after Pete....feels a lovely combo to me bizarrely ![Top](https://passionford.com/forum/images/smilies/smile011.gif)
![Rolling Eyes](https://passionford.com/forum/images/smilies/icon_rolleyes.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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#21
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Originally Posted by Bosch-Man
Chip i talk from experience not books
..plus i never said it would be as good as std comp as that never arose in the conversation..he was asking if it would be ok...and IMO yes it will as i have experience..![007](https://passionford.com/forum/images/smilies/bond.gif)
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
..plus i never said it would be as good as std comp as that never arose in the conversation..he was asking if it would be ok...and IMO yes it will as i have experience..
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#22
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Hi Pete yes....the engine was made for 600bhp so basically its a case of just putting bigger injectors and turbo on it and remap of course.
Its a solid 400bhp with the T34.63 and is setup to perfection and very nice....you wouldnt be dissapointed,you could go bigger turbo but it depends what you want...in my EXPERIANCE it feels nice
Its a solid 400bhp with the T34.63 and is setup to perfection and very nice....you wouldnt be dissapointed,you could go bigger turbo but it depends what you want...in my EXPERIANCE it feels nice
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#25
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I'd say it would be fine. I've got a t34 on a 1600 with similar ish compression ratio, and it drives fine off boost. You could have a nice 2.5 bar spike in the mid range for some serious acceleration
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Originally Posted by Rick
I'd say it would be fine. I've got a t34 on a 1600 with similar ish compression ratio, and it drives fine off boost. You could have a nice 2.5 bar spike in the mid range for some serious acceleration ![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
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#30
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Originally Posted by Bosch-Man
Hi Pete yes....the engine was made for 600bhp so basically its a case of just putting bigger injectors and turbo on it and remap of course.
Its a solid 400bhp with the T34.63 and is setup to perfection and very nice....you wouldnt be dissapointed,you could go bigger turbo but it depends what you want...in my EXPERIANCE it feels nice![Top](https://passionford.com/forum/images/smilies/smile011.gif)
Its a solid 400bhp with the T34.63 and is setup to perfection and very nice....you wouldnt be dissapointed,you could go bigger turbo but it depends what you want...in my EXPERIANCE it feels nice
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
If you had EXPERIENCE of both back to back you would realise that
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
It will work, but its far from ideal.
#31
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...or MAD secret cams seem to work quite well ![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
..becareful if you choose .48 as from MY experience
i didnt like the way the power drops off before the limiter... .63 to the limiter baby no worries...about a 500rpm difference.
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
..becareful if you choose .48 as from MY experience
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#32
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Originally Posted by Bosch-Man
...or MAD secret cams seem to work quite well ![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
..becareful if you choose .48 as from MY experience
i didnt like the way the power drops off before the limiter... .63 to the limiter baby no worries...about a 500rpm difference.
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
..becareful if you choose .48 as from MY experience
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
But a 0.48 housing on a 2wd car, gives more consistant drag times as you can get the launch right more easily...
I used to able to REGULARLY punt out 12s quarters with my 0.48 A/R equipped car (over ten in one day before), whereas with the 0.63 A/R, it would only be possible if the launch was perfect, as it was much more all or nothing (bog or wheelspin city).
#34
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Originally Posted by chip-3door
Originally Posted by Bosch-Man
Hi Pete yes....the engine was made for 600bhp so basically its a case of just putting bigger injectors and turbo on it and remap of course.
Its a solid 400bhp with the T34.63 and is setup to perfection and very nice....you wouldnt be dissapointed,you could go bigger turbo but it depends what you want...in my EXPERIANCE it feels nice![Top](https://passionford.com/forum/images/smilies/smile011.gif)
Its a solid 400bhp with the T34.63 and is setup to perfection and very nice....you wouldnt be dissapointed,you could go bigger turbo but it depends what you want...in my EXPERIANCE it feels nice
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
If you had EXPERIENCE of both back to back you would realise that
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
It will work, but its far from ideal.
Excuse me???
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![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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#39
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Pete i actually KNOW about YB engines contary to popular beleif
I have built a couple and specced them too with a little help from my friends
I dont however profess to know everything to earn internet brownie points,i know what i need to know ONLY..anything more is a waste
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