Fitting 90mm trumpets on ph1 with dth itb

[goran]

I got a 90mm trumpets on my dth on ph1 and ofcourse i cant close the bonnet.
Is it possible to just cut out the inner bonnet part to close the bonnet.
Anyone done it?
i dont want to butcher my bonnet to find out i still cant close it properly :-D

Since it's a dedicated track car it will not use any air filter

I know i can use angle spacers but i would like more not to...


Thanks

 

[bozothenutter]

Somebody on here used custom slicone hose to get a small bend.
I think the trumpets went over the rad.

 

[goran]

I've fitted the polo rad so there would be no problem..
The angle spacers are silly expensive...if i will not be able to close the bonnet i will have to buy it but i'm looking at my options ...
The hood stays up just a little but i'm afraid that cutting the inner part will not be enough...could be...it's a very close call

 

[goran]

Anyone?

 

[markmcgivern]

Trim the bonnet, I have the jenvey angle adapters on myn that cost 300 using 60mm trumpets which gives me a total of 120mm but I still had to trim the bonnet. Hope this helps

 

[green]

Trim the bonnet, I have the jenvey angle adapters on myn that cost 300 using 60mm trumpets which gives me a total of 120mm but I still had to trim the bonnet. Hope this helps

Hi

Are you still using the filter the ktec kit came with or have you got a different set up ? And do you have a link for the adapters ?

 

[markmcgivern]

I don't have a link for the adapters but I do have a pic. I must warn your they aren't cheap! Look on jenvey website, your looking for 45mm spacers with 22. 5 Deg bend and also adapter from tf-sf if my memory serves me right. Total cost is 300.

 

[markmcgivern]

 

[green]

That's great! Thanks very much :up:

 

[goran]

Finaly found the time today and tried... Dth 90mm fits on ph1 after a little bonnet butchering...

The bonnet clearence is about 5mm to the trumpets, since i got the hardest compound engine mounts it should not be a problem.
Probably will need to use the socks air filter.

Hope this helps someone.

 

[Ph1 Tom]

Too close for airflow, you want 20mm clearance minimum

 

[goran]

I will take a picture with a closed bonnet... it think it will be ok
Since the inner part of the trumpet where the air gets sucked in has the apropriate clearence

At the end i can always drill 4 holes on the bonnet... My goal was just to be able to close it properly

 

[green]

I don't have a link for the adapters but I do have a pic. I must warn your they aren't cheap! Look on jenvey website, your looking for 45mm spacers with 22. 5 Deg bend and also adapter from tf-sf if my memory serves me right. Total cost is 300.

Thanks for your advice I've been looking on jenveys web site. Did you use 2 x tf to sf adapters sandwiched either side of the 22 degree spacer bend ?
In other words are you still running k-tecs 60mm trumpets ?

Cheers

 

[markmcgivern]

4x F-THinXX Adaptor TH inlet to SF horn 34 ex vat x4
SCS45_22.5 Spacer SF 22.5deg bend 45mm 25 ex vat x4
You will also need to modify the backing plate to fit the sf angle spacers. Just by drilling new hole and blocking old ones. I use their filter and 60mm trumpets they supply. If you ring jenvey they will confirm the correct parts.
You will also need extra bolts, I picked them up off eBay for a couple of quid

 

[green]

Thanks Mark
I thought the k-tec trumpets had the TH bolt pattern ? Did you use a nut and bolt though the back plate to hold the trumpets on ?
Cheers Andy

 

[goran]

in the end just had to chop the inner side of the bonnet... the car was mapped in italy and made 235hp

acceleration... didnt manage to get it to 100mph cause i ran out of straight line and was holding with one hand a camera and the steering wheel... all in all i'm verry satisfied.. weight is 990kg, still a bit of lightening to do ;-)

 

[goran]

Dyno print
Later the low rev range was bettered

 

[green]

Hi.
I take it your running camshafts as well ?

 

[goran]

Yes, 422 with forged pistons

 

[green]

Good result then :up:

 

[goran]

Video doesn't really show the real acceleration, cause the wheels lost traction even with r888 and gripper lsd so i screwed up the 1st gear

 

[goran]

a normal video from 0-100mph and more to 200kph